Finding the Fourth Proportional to 19,978,890.05, 27,570,868.27 and 10,811,532.80

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978,890.05 : 27,570,868.27 = 10,811,532.80 : x
2. Step 2: Convert to fraction form
   19,978,890.05/27,570,868.27 = 10,811,532.80/x
3. Step 3: Cross multiply
   19,978,890.05x = 27,570,868.27 × 10,811,532.80
4. Step 4: Simplify right side
   19,978,890.05x = 298,083,346,573,211.31
5. Step 5: Solve for x
   x = 298,083,346,573,211.31/19,978,890.05
6. Step 6: Final answer
   x = 14,919,915.26