Finding the Fourth Proportional to 17,091.20, 23,585.06 and 12,613.32

Step by Step Solution

1. Step 1: Write the proportion equation
   17,091.20 : 23,585.06 = 12,613.32 : x
2. Step 2: Convert to fraction form
   17,091.20/23,585.06 = 12,613.32/x
3. Step 3: Cross multiply
   17,091.20x = 23,585.06 × 12,613.32
4. Step 4: Simplify right side
   17,091.20x = 297,485,869.58
5. Step 5: Solve for x
   x = 297,485,869.58/17,091.20
6. Step 6: Final answer
   x = 17,405.79