Finding the Fourth Proportional to 12,588.62, 17,342.28 and 8,804.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,588.62 : 17,342.28 = 8,804.70 : x
2. Step 2: Convert to fraction form
   12,588.62/17,342.28 = 8,804.70/x
3. Step 3: Cross multiply
   12,588.62x = 17,342.28 × 8,804.70
4. Step 4: Simplify right side
   12,588.62x = 152,693,572.72
5. Step 5: Solve for x
   x = 152,693,572.72/12,588.62
6. Step 6: Final answer
   x = 12,129.50