Finding the Fourth Proportional to 21,503.86, 32,243.49 and 8,340.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,503.86 : 32,243.49 = 8,340.86 : x
2. Step 2: Convert to fraction form
   21,503.86/32,243.49 = 8,340.86/x
3. Step 3: Cross multiply
   21,503.86x = 32,243.49 × 8,340.86
4. Step 4: Simplify right side
   21,503.86x = 268,938,516.61
5. Step 5: Solve for x
   x = 268,938,516.61/21,503.86
6. Step 6: Final answer
   x = 12,506.52