Finding the Fourth Proportional to 12,002.58, 17,984.43 and 9,086.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.58 : 17,984.43 = 9,086.58 : x
2. Step 2: Convert to fraction form
   12,002.58/17,984.43 = 9,086.58/x
3. Step 3: Cross multiply
   12,002.58x = 17,984.43 × 9,086.58
4. Step 4: Simplify right side
   12,002.58x = 163,416,961.95
5. Step 5: Solve for x
   x = 163,416,961.95/12,002.58
6. Step 6: Final answer
   x = 13,615.15