Finding the Fourth Proportional to 10,558,513.20, 14,570,748.18 and 5,729,617.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,558,513.20 : 14,570,748.18 = 5,729,617.20 : x
2. Step 2: Convert to fraction form
   10,558,513.20/14,570,748.18 = 5,729,617.20/x
3. Step 3: Cross multiply
   10,558,513.20x = 14,570,748.18 × 5,729,617.20
4. Step 4: Simplify right side
   10,558,513.20x = 83,484,809,388,996.70
5. Step 5: Solve for x
   x = 83,484,809,388,996.70/10,558,513.20
6. Step 6: Final answer
   x = 7,906,871.72