Finding the Fourth Proportional to 7,059.59, 9,742.77 and 3,915.77

Step by Step Solution

1. Step 1: Write the proportion equation
   7,059.59 : 9,742.77 = 3,915.77 : x
2. Step 2: Convert to fraction form
   7,059.59/9,742.77 = 3,915.77/x
3. Step 3: Cross multiply
   7,059.59x = 9,742.77 × 3,915.77
4. Step 4: Simplify right side
   7,059.59x = 38,150,426.90
5. Step 5: Solve for x
   x = 38,150,426.90/7,059.59
6. Step 6: Final answer
   x = 5,404.06