Finding the Fourth Proportional to 12,470.76, 17,216.42 and 9,110.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,470.76 : 17,216.42 = 9,110.12 : x
2. Step 2: Convert to fraction form
   12,470.76/17,216.42 = 9,110.12/x
3. Step 3: Cross multiply
   12,470.76x = 17,216.42 × 9,110.12
4. Step 4: Simplify right side
   12,470.76x = 156,843,652.17
5. Step 5: Solve for x
   x = 156,843,652.17/12,470.76
6. Step 6: Final answer
   x = 12,576.91