Finding the Fourth Proportional to 7,047.59, 9,724.88 and 3,902.99

Step by Step Solution

1. Step 1: Write the proportion equation
   7,047.59 : 9,724.88 = 3,902.99 : x
2. Step 2: Convert to fraction form
   7,047.59/9,724.88 = 3,902.99/x
3. Step 3: Cross multiply
   7,047.59x = 9,724.88 × 3,902.99
4. Step 4: Simplify right side
   7,047.59x = 37,956,070.52
5. Step 5: Solve for x
   x = 37,956,070.52/7,047.59
6. Step 6: Final answer
   x = 5,385.68