Finding the Fourth Proportional to 21,927, 32,892.12 and 7,134.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,927 : 32,892.12 = 7,134.78 : x
2. Step 2: Convert to fraction form
   21,927/32,892.12 = 7,134.78/x
3. Step 3: Cross multiply
   21,927x = 32,892.12 × 7,134.78
4. Step 4: Simplify right side
   21,927x = 234,678,039.93
5. Step 5: Solve for x
   x = 234,678,039.93/21,927
6. Step 6: Final answer
   x = 10,702.70