Finding the Fourth Proportional to 21,934.61, 32,906.35 and 7,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,934.61 : 32,906.35 = 7,139.56 : x
2. Step 2: Convert to fraction form
   21,934.61/32,906.35 = 7,139.56/x
3. Step 3: Cross multiply
   21,934.61x = 32,906.35 × 7,139.56
4. Step 4: Simplify right side
   21,934.61x = 234,936,713.52
5. Step 5: Solve for x
   x = 234,936,713.52/21,934.61
6. Step 6: Final answer
   x = 10,710.78