Finding the Fourth Proportional to 12,586.69, 17,351.27 and 8,798.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.69 : 17,351.27 = 8,798.05 : x
2. Step 2: Convert to fraction form
   12,586.69/17,351.27 = 8,798.05/x
3. Step 3: Cross multiply
   12,586.69x = 17,351.27 × 8,798.05
4. Step 4: Simplify right side
   12,586.69x = 152,657,341.02
5. Step 5: Solve for x
   x = 152,657,341.02/12,586.69
6. Step 6: Final answer
   x = 12,128.47