Finding the Fourth Proportional to 12,739.17, 17,575.82 and 7,701.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,739.17 : 17,575.82 = 7,701.48 : x
2. Step 2: Convert to fraction form
   12,739.17/17,575.82 = 7,701.48/x
3. Step 3: Cross multiply
   12,739.17x = 17,575.82 × 7,701.48
4. Step 4: Simplify right side
   12,739.17x = 135,359,816.59
5. Step 5: Solve for x
   x = 135,359,816.59/12,739.17
6. Step 6: Final answer
   x = 10,625.48