Finding the Fourth Proportional to 39,816.72, 59,733.72 and 12,114

Step by Step Solution

1. Step 1: Write the proportion equation
   39,816.72 : 59,733.72 = 12,114 : x
2. Step 2: Convert to fraction form
   39,816.72/59,733.72 = 12,114/x
3. Step 3: Cross multiply
   39,816.72x = 59,733.72 × 12,114
4. Step 4: Simplify right side
   39,816.72x = 723,614,284.08
5. Step 5: Solve for x
   x = 723,614,284.08/39,816.72
6. Step 6: Final answer
   x = 18,173.63