Finding the Fourth Proportional to 12,958.50, 17,883.27 and 7,657.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,958.50 : 17,883.27 = 7,657.86 : x
2. Step 2: Convert to fraction form
   12,958.50/17,883.27 = 7,657.86/x
3. Step 3: Cross multiply
   12,958.50x = 17,883.27 × 7,657.86
4. Step 4: Simplify right side
   12,958.50x = 136,947,578.00
5. Step 5: Solve for x
   x = 136,947,578.00/12,958.50
6. Step 6: Final answer
   x = 10,568.17