Finding the Fourth Proportional to 12,938.41, 17,852.02 and 9,358.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.41 : 17,852.02 = 9,358.61 : x
2. Step 2: Convert to fraction form
   12,938.41/17,852.02 = 9,358.61/x
3. Step 3: Cross multiply
   12,938.41x = 17,852.02 × 9,358.61
4. Step 4: Simplify right side
   12,938.41x = 167,070,092.89
5. Step 5: Solve for x
   x = 167,070,092.89/12,938.41
6. Step 6: Final answer
   x = 12,912.72