Finding the Fourth Proportional to 13,124.56, 18,111.27 and 7,459.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.56 : 18,111.27 = 7,459.15 : x
2. Step 2: Convert to fraction form
   13,124.56/18,111.27 = 7,459.15/x
3. Step 3: Cross multiply
   13,124.56x = 18,111.27 × 7,459.15
4. Step 4: Simplify right side
   13,124.56x = 135,094,679.62
5. Step 5: Solve for x
   x = 135,094,679.62/13,124.56
6. Step 6: Final answer
   x = 10,293.27