Finding the Fourth Proportional to 16,670.25, 23,005.56 and 9,116.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16,670.25 : 23,005.56 = 9,116.13 : x
2. Step 2: Convert to fraction form
   16,670.25/23,005.56 = 9,116.13/x
3. Step 3: Cross multiply
   16,670.25x = 23,005.56 × 9,116.13
4. Step 4: Simplify right side
   16,670.25x = 209,721,630.10
5. Step 5: Solve for x
   x = 209,721,630.10/16,670.25
6. Step 6: Final answer
   x = 12,580.60