Finding the Fourth Proportional to 9,926,578.89, 13,699,011.12 and 5,516,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,926,578.89 : 13,699,011.12 = 5,516,490.42 : x
2. Step 2: Convert to fraction form
   9,926,578.89/13,699,011.12 = 5,516,490.42/x
3. Step 3: Cross multiply
   9,926,578.89x = 13,699,011.12 × 5,516,490.42
4. Step 4: Simplify right side
   9,926,578.89x = 75,570,463,606,953.47
5. Step 5: Solve for x
   x = 75,570,463,606,953.47/9,926,578.89
6. Step 6: Final answer
   x = 7,612,941.42