Finding the Fourth Proportional to 12,591.48, 17,374.86 and 7,002.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.48 : 17,374.86 = 7,002.12 : x
2. Step 2: Convert to fraction form
   12,591.48/17,374.86 = 7,002.12/x
3. Step 3: Cross multiply
   12,591.48x = 17,374.86 × 7,002.12
4. Step 4: Simplify right side
   12,591.48x = 121,660,854.70
5. Step 5: Solve for x
   x = 121,660,854.70/12,591.48
6. Step 6: Final answer
   x = 9,662.16