Finding the Fourth Proportional to 16,587.42, 22,889.71 and 9,415.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,587.42 : 22,889.71 = 9,415.43 : x
2. Step 2: Convert to fraction form
   16,587.42/22,889.71 = 9,415.43/x
3. Step 3: Cross multiply
   16,587.42x = 22,889.71 × 9,415.43
4. Step 4: Simplify right side
   16,587.42x = 215,516,462.23
5. Step 5: Solve for x
   x = 215,516,462.23/16,587.42
6. Step 6: Final answer
   x = 12,992.77