Finding the Fourth Proportional to 10,080.78, 15,118.74 and 4,812.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,080.78 : 15,118.74 = 4,812.54 : x
2. Step 2: Convert to fraction form
   10,080.78/15,118.74 = 4,812.54/x
3. Step 3: Cross multiply
   10,080.78x = 15,118.74 × 4,812.54
4. Step 4: Simplify right side
   10,080.78x = 72,759,541.00
5. Step 5: Solve for x
   x = 72,759,541.00/10,080.78
6. Step 6: Final answer
   x = 7,217.65