Finding the Fourth Proportional to 12,707.55, 17,534.75 and 7,042.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,707.55 : 17,534.75 = 7,042.02 : x
2. Step 2: Convert to fraction form
   12,707.55/17,534.75 = 7,042.02/x
3. Step 3: Cross multiply
   12,707.55x = 17,534.75 × 7,042.02
4. Step 4: Simplify right side
   12,707.55x = 123,480,060.20
5. Step 5: Solve for x
   x = 123,480,060.20/12,707.55
6. Step 6: Final answer
   x = 9,717.07