Finding the Fourth Proportional to 22,601.96, 31,189.86 and 12,665.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,601.96 : 31,189.86 = 12,665.32 : x
2. Step 2: Convert to fraction form
   22,601.96/31,189.86 = 12,665.32/x
3. Step 3: Cross multiply
   22,601.96x = 31,189.86 × 12,665.32
4. Step 4: Simplify right side
   22,601.96x = 395,029,557.66
5. Step 5: Solve for x
   x = 395,029,557.66/22,601.96
6. Step 6: Final answer
   x = 17,477.67