Finding the Fourth Proportional to 10,546.02, 15,816.60 and 7,280.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,546.02 : 15,816.60 = 7,280.10 : x
2. Step 2: Convert to fraction form
   10,546.02/15,816.60 = 7,280.10/x
3. Step 3: Cross multiply
   10,546.02x = 15,816.60 × 7,280.10
4. Step 4: Simplify right side
   10,546.02x = 115,146,429.66
5. Step 5: Solve for x
   x = 115,146,429.66/10,546.02
6. Step 6: Final answer
   x = 10,918.47