Finding the Fourth Proportional to 13,009.10, 17,948.17 and 8,469.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,009.10 : 17,948.17 = 8,469.71 : x
2. Step 2: Convert to fraction form
   13,009.10/17,948.17 = 8,469.71/x
3. Step 3: Cross multiply
   13,009.10x = 17,948.17 × 8,469.71
4. Step 4: Simplify right side
   13,009.10x = 152,015,684.02
5. Step 5: Solve for x
   x = 152,015,684.02/13,009.10
6. Step 6: Final answer
   x = 11,685.34