Finding the Fourth Proportional to 21,693.47, 32,511.77 and 12,337.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,693.47 : 32,511.77 = 12,337.79 : x
2. Step 2: Convert to fraction form
   21,693.47/32,511.77 = 12,337.79/x
3. Step 3: Cross multiply
   21,693.47x = 32,511.77 × 12,337.79
4. Step 4: Simplify right side
   21,693.47x = 401,123,329.10
5. Step 5: Solve for x
   x = 401,123,329.10/21,693.47
6. Step 6: Final answer
   x = 18,490.51