Finding the Fourth Proportional to 8,877.91, 12,255.02 and 5,340.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,877.91 : 12,255.02 = 5,340.45 : x
2. Step 2: Convert to fraction form
   8,877.91/12,255.02 = 5,340.45/x
3. Step 3: Cross multiply
   8,877.91x = 12,255.02 × 5,340.45
4. Step 4: Simplify right side
   8,877.91x = 65,447,321.56
5. Step 5: Solve for x
   x = 65,447,321.56/8,877.91
6. Step 6: Final answer
   x = 7,371.93