Finding the Fourth Proportional to 9,261.21, 12,777.86 and 5,482.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.21 : 12,777.86 = 5,482.72 : x
2. Step 2: Convert to fraction form
   9,261.21/12,777.86 = 5,482.72/x
3. Step 3: Cross multiply
   9,261.21x = 12,777.86 × 5,482.72
4. Step 4: Simplify right side
   9,261.21x = 70,057,337.28
5. Step 5: Solve for x
   x = 70,057,337.28/9,261.21
6. Step 6: Final answer
   x = 7,564.60