Finding the Fourth Proportional to 7,337.80, 10,287.50 and 7,337.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,337.80 : 10,287.50 = 7,337.80 : x
2. Step 2: Convert to fraction form
   7,337.80/10,287.50 = 7,337.80/x
3. Step 3: Cross multiply
   7,337.80x = 10,287.50 × 7,337.80
4. Step 4: Simplify right side
   7,337.80x = 75,487,617.50
5. Step 5: Solve for x
   x = 75,487,617.50/7,337.80
6. Step 6: Final answer
   x = 10,287.50