Finding the Fourth Proportional to 23,659.76, 32,663.60 and 17,280

Step by Step Solution

1. Step 1: Write the proportion equation
   23,659.76 : 32,663.60 = 17,280 : x
2. Step 2: Convert to fraction form
   23,659.76/32,663.60 = 17,280/x
3. Step 3: Cross multiply
   23,659.76x = 32,663.60 × 17,280
4. Step 4: Simplify right side
   23,659.76x = 564,427,008
5. Step 5: Solve for x
   x = 564,427,008/23,659.76
6. Step 6: Final answer
   x = 23,855.99