Finding the Fourth Proportional to 8,758.80, 13,139.04 and 2,915.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.80 : 13,139.04 = 2,915.82 : x
2. Step 2: Convert to fraction form
   8,758.80/13,139.04 = 2,915.82/x
3. Step 3: Cross multiply
   8,758.80x = 13,139.04 × 2,915.82
4. Step 4: Simplify right side
   8,758.80x = 38,311,075.61
5. Step 5: Solve for x
   x = 38,311,075.61/8,758.80
6. Step 6: Final answer
   x = 4,374.01