Finding the Fourth Proportional to 12,686.32, 19,034.94 and 5,292.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,686.32 : 19,034.94 = 5,292.23 : x
2. Step 2: Convert to fraction form
   12,686.32/19,034.94 = 5,292.23/x
3. Step 3: Cross multiply
   12,686.32x = 19,034.94 × 5,292.23
4. Step 4: Simplify right side
   12,686.32x = 100,737,280.52
5. Step 5: Solve for x
   x = 100,737,280.52/12,686.32
6. Step 6: Final answer
   x = 7,940.63