Finding the Fourth Proportional to 12,695.31, 17,508.67 and 7,658.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,695.31 : 17,508.67 = 7,658.46 : x
2. Step 2: Convert to fraction form
   12,695.31/17,508.67 = 7,658.46/x
3. Step 3: Cross multiply
   12,695.31x = 17,508.67 × 7,658.46
4. Step 4: Simplify right side
   12,695.31x = 134,089,429.70
5. Step 5: Solve for x
   x = 134,089,429.70/12,695.31
6. Step 6: Final answer
   x = 10,562.12