Finding the Fourth Proportional to 9,047.79, 12,485.55 and 5,271.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,047.79 : 12,485.55 = 5,271.06 : x
2. Step 2: Convert to fraction form
   9,047.79/12,485.55 = 5,271.06/x
3. Step 3: Cross multiply
   9,047.79x = 12,485.55 × 5,271.06
4. Step 4: Simplify right side
   9,047.79x = 65,812,083.18
5. Step 5: Solve for x
   x = 65,812,083.18/9,047.79
6. Step 6: Final answer
   x = 7,273.83