Finding the Fourth Proportional to 10,388,331.90, 14,335,647.78 and 5,678,518.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388,331.90 : 14,335,647.78 = 5,678,518.06 : x
2. Step 2: Convert to fraction form
   10,388,331.90/14,335,647.78 = 5,678,518.06/x
3. Step 3: Cross multiply
   10,388,331.90x = 14,335,647.78 × 5,678,518.06
4. Step 4: Simplify right side
   10,388,331.90x = 81,405,234,820,528.89
5. Step 5: Solve for x
   x = 81,405,234,820,528.89/10,388,331.90
6. Step 6: Final answer
   x = 7,836,218.13