Finding the Fourth Proportional to 10,851.96, 14,981.28 and 7,080.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,851.96 : 14,981.28 = 7,080.60 : x
2. Step 2: Convert to fraction form
   10,851.96/14,981.28 = 7,080.60/x
3. Step 3: Cross multiply
   10,851.96x = 14,981.28 × 7,080.60
4. Step 4: Simplify right side
   10,851.96x = 106,076,451.17
5. Step 5: Solve for x
   x = 106,076,451.17/10,851.96
6. Step 6: Final answer
   x = 9,774.87