Finding the Fourth Proportional to 25,106.78, 34,693.20 and 18,288.93

Step by Step Solution

1. Step 1: Write the proportion equation
   25,106.78 : 34,693.20 = 18,288.93 : x
2. Step 2: Convert to fraction form
   25,106.78/34,693.20 = 18,288.93/x
3. Step 3: Cross multiply
   25,106.78x = 34,693.20 × 18,288.93
4. Step 4: Simplify right side
   25,106.78x = 634,501,414.83
5. Step 5: Solve for x
   x = 634,501,414.83/25,106.78
6. Step 6: Final answer
   x = 25,272.12