Finding the Fourth Proportional to 8,978.17, 13,461.02 and 3,977.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.17 : 13,461.02 = 3,977.83 : x
2. Step 2: Convert to fraction form
   8,978.17/13,461.02 = 3,977.83/x
3. Step 3: Cross multiply
   8,978.17x = 13,461.02 × 3,977.83
4. Step 4: Simplify right side
   8,978.17x = 53,545,679.78
5. Step 5: Solve for x
   x = 53,545,679.78/8,978.17
6. Step 6: Final answer
   x = 5,963.98