Finding the Fourth Proportional to 8,701.56, 12,008.25 and 5,117.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,701.56 : 12,008.25 = 5,117.31 : x
2. Step 2: Convert to fraction form
   8,701.56/12,008.25 = 5,117.31/x
3. Step 3: Cross multiply
   8,701.56x = 12,008.25 × 5,117.31
4. Step 4: Simplify right side
   8,701.56x = 61,449,937.81
5. Step 5: Solve for x
   x = 61,449,937.81/8,701.56
6. Step 6: Final answer
   x = 7,061.94