Finding the Fourth Proportional to 16,665.32, 22,901.98 and 15,894.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.32 : 22,901.98 = 15,894.38 : x
2. Step 2: Convert to fraction form
   16,665.32/22,901.98 = 15,894.38/x
3. Step 3: Cross multiply
   16,665.32x = 22,901.98 × 15,894.38
4. Step 4: Simplify right side
   16,665.32x = 364,012,772.87
5. Step 5: Solve for x
   x = 364,012,772.87/16,665.32
6. Step 6: Final answer
   x = 21,842.53