Finding the Fourth Proportional to 8,739.28, 13,106.72 and 2,499.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.28 : 13,106.72 = 2,499.32 : x
2. Step 2: Convert to fraction form
   8,739.28/13,106.72 = 2,499.32/x
3. Step 3: Cross multiply
   8,739.28x = 13,106.72 × 2,499.32
4. Step 4: Simplify right side
   8,739.28x = 32,757,887.43
5. Step 5: Solve for x
   x = 32,757,887.43/8,739.28
6. Step 6: Final answer
   x = 3,748.35