Finding the Fourth Proportional to 9,928.76, 13,702.02 and 5,737.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,928.76 : 13,702.02 = 5,737.02 : x
2. Step 2: Convert to fraction form
   9,928.76/13,702.02 = 5,737.02/x
3. Step 3: Cross multiply
   9,928.76x = 13,702.02 × 5,737.02
4. Step 4: Simplify right side
   9,928.76x = 78,608,762.78
5. Step 5: Solve for x
   x = 78,608,762.78/9,928.76
6. Step 6: Final answer
   x = 7,917.28