Finding the Fourth Proportional to 22,642.83, 31,270.77 and 15,578.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,642.83 : 31,270.77 = 15,578.82 : x
2. Step 2: Convert to fraction form
   22,642.83/31,270.77 = 15,578.82/x
3. Step 3: Cross multiply
   22,642.83x = 31,270.77 × 15,578.82
4. Step 4: Simplify right side
   22,642.83x = 487,161,697.09
5. Step 5: Solve for x
   x = 487,161,697.09/22,642.83
6. Step 6: Final answer
   x = 21,515.05