Finding the Fourth Proportional to 12,342.42, 18,515.55 and 4,132.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342.42 : 18,515.55 = 4,132.50 : x
2. Step 2: Convert to fraction form
   12,342.42/18,515.55 = 4,132.50/x
3. Step 3: Cross multiply
   12,342.42x = 18,515.55 × 4,132.50
4. Step 4: Simplify right side
   12,342.42x = 76,515,510.38
5. Step 5: Solve for x
   x = 76,515,510.38/12,342.42
6. Step 6: Final answer
   x = 6,199.39