Finding the Fourth Proportional to 34,938.72, 52,406.73 and 8,642.88

Step by Step Solution

1. Step 1: Write the proportion equation
   34,938.72 : 52,406.73 = 8,642.88 : x
2. Step 2: Convert to fraction form
   34,938.72/52,406.73 = 8,642.88/x
3. Step 3: Cross multiply
   34,938.72x = 52,406.73 × 8,642.88
4. Step 4: Simplify right side
   34,938.72x = 452,945,078.58
5. Step 5: Solve for x
   x = 452,945,078.58/34,938.72
6. Step 6: Final answer
   x = 12,963.99