Finding the Fourth Proportional to 16,359.80, 22,590.56 and 15,830.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,359.80 : 22,590.56 = 15,830.82 : x
2. Step 2: Convert to fraction form
   16,359.80/22,590.56 = 15,830.82/x
3. Step 3: Cross multiply
   16,359.80x = 22,590.56 × 15,830.82
4. Step 4: Simplify right side
   16,359.80x = 357,627,089.06
5. Step 5: Solve for x
   x = 357,627,089.06/16,359.80
6. Step 6: Final answer
   x = 21,860.11