Finding the Fourth Proportional to 7,965.28, 10,992.72 and 4,981.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,965.28 : 10,992.72 = 4,981.60 : x
2. Step 2: Convert to fraction form
   7,965.28/10,992.72 = 4,981.60/x
3. Step 3: Cross multiply
   7,965.28x = 10,992.72 × 4,981.60
4. Step 4: Simplify right side
   7,965.28x = 54,761,333.95
5. Step 5: Solve for x
   x = 54,761,333.95/7,965.28
6. Step 6: Final answer
   x = 6,875.00