Finding the Fourth Proportional to 10,607.84, 15,915.92 and 9,746.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,607.84 : 15,915.92 = 9,746.72 : x
2. Step 2: Convert to fraction form
   10,607.84/15,915.92 = 9,746.72/x
3. Step 3: Cross multiply
   10,607.84x = 15,915.92 × 9,746.72
4. Step 4: Simplify right side
   10,607.84x = 155,128,015.78
5. Step 5: Solve for x
   x = 155,128,015.78/10,607.84
6. Step 6: Final answer
   x = 14,623.90