Finding the Fourth Proportional to 23,601.48, 32,569.79 and 12,990.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.48 : 32,569.79 = 12,990.89 : x
2. Step 2: Convert to fraction form
   23,601.48/32,569.79 = 12,990.89/x
3. Step 3: Cross multiply
   23,601.48x = 32,569.79 × 12,990.89
4. Step 4: Simplify right side
   23,601.48x = 423,110,331.41
5. Step 5: Solve for x
   x = 423,110,331.41/23,601.48
6. Step 6: Final answer
   x = 17,927.28