Finding the Fourth Proportional to 12,308.28, 16,987.10 and 7,003.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.28 : 16,987.10 = 7,003.59 : x
2. Step 2: Convert to fraction form
   12,308.28/16,987.10 = 7,003.59/x
3. Step 3: Cross multiply
   12,308.28x = 16,987.10 × 7,003.59
4. Step 4: Simplify right side
   12,308.28x = 118,970,648.67
5. Step 5: Solve for x
   x = 118,970,648.67/12,308.28
6. Step 6: Final answer
   x = 9,665.90