Finding the Fourth Proportional to 12,417.17, 17,131.50 and 7,039.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.17 : 17,131.50 = 7,039.03 : x
2. Step 2: Convert to fraction form
   12,417.17/17,131.50 = 7,039.03/x
3. Step 3: Cross multiply
   12,417.17x = 17,131.50 × 7,039.03
4. Step 4: Simplify right side
   12,417.17x = 120,589,029.77
5. Step 5: Solve for x
   x = 120,589,029.77/12,417.17
6. Step 6: Final answer
   x = 9,711.48