Finding the Fourth Proportional to 12,439.99, 17,165.82 and 7,403.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,439.99 : 17,165.82 = 7,403.52 : x
2. Step 2: Convert to fraction form
   12,439.99/17,165.82 = 7,403.52/x
3. Step 3: Cross multiply
   12,439.99x = 17,165.82 × 7,403.52
4. Step 4: Simplify right side
   12,439.99x = 127,087,491.69
5. Step 5: Solve for x
   x = 127,087,491.69/12,439.99
6. Step 6: Final answer
   x = 10,216.04