Finding the Fourth Proportional to 26,978.86, 40,452.63 and 8,253.55

Step by Step Solution

1. Step 1: Write the proportion equation
   26,978.86 : 40,452.63 = 8,253.55 : x
2. Step 2: Convert to fraction form
   26,978.86/40,452.63 = 8,253.55/x
3. Step 3: Cross multiply
   26,978.86x = 40,452.63 × 8,253.55
4. Step 4: Simplify right side
   26,978.86x = 333,877,804.34
5. Step 5: Solve for x
   x = 333,877,804.34/26,978.86
6. Step 6: Final answer
   x = 12,375.53