Finding the Fourth Proportional to 17,180.16, 23,705.12 and 9,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,180.16 : 23,705.12 = 9,726.72 : x
2. Step 2: Convert to fraction form
   17,180.16/23,705.12 = 9,726.72/x
3. Step 3: Cross multiply
   17,180.16x = 23,705.12 × 9,726.72
4. Step 4: Simplify right side
   17,180.16x = 230,573,064.81
5. Step 5: Solve for x
   x = 230,573,064.81/17,180.16
6. Step 6: Final answer
   x = 13,420.89