Finding the Fourth Proportional to 9,465.20, 13,060.56 and 5,486.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,465.20 : 13,060.56 = 5,486.72 : x
2. Step 2: Convert to fraction form
   9,465.20/13,060.56 = 5,486.72/x
3. Step 3: Cross multiply
   9,465.20x = 13,060.56 × 5,486.72
4. Step 4: Simplify right side
   9,465.20x = 71,659,635.76
5. Step 5: Solve for x
   x = 71,659,635.76/9,465.20
6. Step 6: Final answer
   x = 7,570.85