Finding the Fourth Proportional to 16,100.42, 22,192.91 and 12,691.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,100.42 : 22,192.91 = 12,691.87 : x
2. Step 2: Convert to fraction form
   16,100.42/22,192.91 = 12,691.87/x
3. Step 3: Cross multiply
   16,100.42x = 22,192.91 × 12,691.87
4. Step 4: Simplify right side
   16,100.42x = 281,669,584.12
5. Step 5: Solve for x
   x = 281,669,584.12/16,100.42
6. Step 6: Final answer
   x = 17,494.55