Finding the Fourth Proportional to 21,100.91, 31,656.83 and 9,422.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,100.91 : 31,656.83 = 9,422.33 : x
2. Step 2: Convert to fraction form
   21,100.91/31,656.83 = 9,422.33/x
3. Step 3: Cross multiply
   21,100.91x = 31,656.83 × 9,422.33
4. Step 4: Simplify right side
   21,100.91x = 298,280,893.62
5. Step 5: Solve for x
   x = 298,280,893.62/21,100.91
6. Step 6: Final answer
   x = 14,135.93