Finding the Fourth Proportional to 12,124.40, 16,726.37 and 7,405.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,124.40 : 16,726.37 = 7,405.88 : x
2. Step 2: Convert to fraction form
   12,124.40/16,726.37 = 7,405.88/x
3. Step 3: Cross multiply
   12,124.40x = 16,726.37 × 7,405.88
4. Step 4: Simplify right side
   12,124.40x = 123,873,368.39
5. Step 5: Solve for x
   x = 123,873,368.39/12,124.40
6. Step 6: Final answer
   x = 10,216.87