Finding the Fourth Proportional to 10,721.50, 14,787.76 and 7,364.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,721.50 : 14,787.76 = 7,364.86 : x
2. Step 2: Convert to fraction form
   10,721.50/14,787.76 = 7,364.86/x
3. Step 3: Cross multiply
   10,721.50x = 14,787.76 × 7,364.86
4. Step 4: Simplify right side
   10,721.50x = 108,909,689.76
5. Step 5: Solve for x
   x = 108,909,689.76/10,721.50
6. Step 6: Final answer
   x = 10,158.07