Finding the Fourth Proportional to 16,175.89, 22,334.89 and 15,917.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,175.89 : 22,334.89 = 15,917.55 : x
2. Step 2: Convert to fraction form
   16,175.89/22,334.89 = 15,917.55/x
3. Step 3: Cross multiply
   16,175.89x = 22,334.89 × 15,917.55
4. Step 4: Simplify right side
   16,175.89x = 355,516,688.53
5. Step 5: Solve for x
   x = 355,516,688.53/16,175.89
6. Step 6: Final answer
   x = 21,978.19