Finding the Fourth Proportional to 21,807.86, 30,092.60 and 12,248.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,807.86 : 30,092.60 = 12,248.82 : x
2. Step 2: Convert to fraction form
   21,807.86/30,092.60 = 12,248.82/x
3. Step 3: Cross multiply
   21,807.86x = 30,092.60 × 12,248.82
4. Step 4: Simplify right side
   21,807.86x = 368,598,840.73
5. Step 5: Solve for x
   x = 368,598,840.73/21,807.86
6. Step 6: Final answer
   x = 16,902.11