Finding the Fourth Proportional to 15,877.95, 21,906.52 and 9,162.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,877.95 : 21,906.52 = 9,162.69 : x
2. Step 2: Convert to fraction form
   15,877.95/21,906.52 = 9,162.69/x
3. Step 3: Cross multiply
   15,877.95x = 21,906.52 × 9,162.69
4. Step 4: Simplify right side
   15,877.95x = 200,722,651.74
5. Step 5: Solve for x
   x = 200,722,651.74/15,877.95
6. Step 6: Final answer
   x = 12,641.60