Finding the Fourth Proportional to 9,912,338,136.53, 14,864,144,073.71 and 5,253,120,487.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,912,338,136.53 : 14,864,144,073.71 = 5,253,120,487.79 : x
2. Step 2: Convert to fraction form
   9,912,338,136.53/14,864,144,073.71 = 5,253,120,487.79/x
3. Step 3: Cross multiply
   9,912,338,136.53x = 14,864,144,073.71 × 5,253,120,487.79
4. Step 4: Simplify right side
   9,912,338,136.53x = 78,083,139,766,967,730,176
5. Step 5: Solve for x
   x = 78,083,139,766,967,730,176/9,912,338,136.53
6. Step 6: Final answer
   x = 7,877,368,456.51