Finding the Fourth Proportional to 22,548.78, 31,118.18 and 12,340.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,548.78 : 31,118.18 = 12,340.50 : x
2. Step 2: Convert to fraction form
   22,548.78/31,118.18 = 12,340.50/x
3. Step 3: Cross multiply
   22,548.78x = 31,118.18 × 12,340.50
4. Step 4: Simplify right side
   22,548.78x = 384,013,900.29
5. Step 5: Solve for x
   x = 384,013,900.29/22,548.78
6. Step 6: Final answer
   x = 17,030.36