Finding the Fourth Proportional to 5,612.24, 7,688.79 and 5,402.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,612.24 : 7,688.79 = 5,402.04 : x
2. Step 2: Convert to fraction form
   5,612.24/7,688.79 = 5,402.04/x
3. Step 3: Cross multiply
   5,612.24x = 7,688.79 × 5,402.04
4. Step 4: Simplify right side
   5,612.24x = 41,535,151.13
5. Step 5: Solve for x
   x = 41,535,151.13/5,612.24
6. Step 6: Final answer
   x = 7,400.82