Finding the Fourth Proportional to 8,758.98, 13,139.30 and 3,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.98 : 13,139.30 = 3,492.72 : x
2. Step 2: Convert to fraction form
   8,758.98/13,139.30 = 3,492.72/x
3. Step 3: Cross multiply
   8,758.98x = 13,139.30 × 3,492.72
4. Step 4: Simplify right side
   8,758.98x = 45,891,895.90
5. Step 5: Solve for x
   x = 45,891,895.90/8,758.98
6. Step 6: Final answer
   x = 5,239.41