Finding the Fourth Proportional to 10,642.30, 15,957.55 and 4,937.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,642.30 : 15,957.55 = 4,937.05 : x
2. Step 2: Convert to fraction form
   10,642.30/15,957.55 = 4,937.05/x
3. Step 3: Cross multiply
   10,642.30x = 15,957.55 × 4,937.05
4. Step 4: Simplify right side
   10,642.30x = 78,783,117.75
5. Step 5: Solve for x
   x = 78,783,117.75/10,642.30
6. Step 6: Final answer
   x = 7,402.83