Finding the Fourth Proportional to 16,978.72, 23,454.26 and 16,148.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.72 : 23,454.26 = 16,148.34 : x
2. Step 2: Convert to fraction form
   16,978.72/23,454.26 = 16,148.34/x
3. Step 3: Cross multiply
   16,978.72x = 23,454.26 × 16,148.34
4. Step 4: Simplify right side
   16,978.72x = 378,747,364.93
5. Step 5: Solve for x
   x = 378,747,364.93/16,978.72
6. Step 6: Final answer
   x = 22,307.18