Finding the Fourth Proportional to 23,601.47, 32,569.78 and 12,990.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.47 : 32,569.78 = 12,990.88 : x
2. Step 2: Convert to fraction form
   23,601.47/32,569.78 = 12,990.88/x
3. Step 3: Cross multiply
   23,601.47x = 32,569.78 × 12,990.88
4. Step 4: Simplify right side
   23,601.47x = 423,110,103.61
5. Step 5: Solve for x
   x = 423,110,103.61/23,601.47
6. Step 6: Final answer
   x = 17,927.28