Finding the Fourth Proportional to 9,261.17, 12,780.50 and 5,484.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,261.17 : 12,780.50 = 5,484.55 : x
2. Step 2: Convert to fraction form
   9,261.17/12,780.50 = 5,484.55/x
3. Step 3: Cross multiply
   9,261.17x = 12,780.50 × 5,484.55
4. Step 4: Simplify right side
   9,261.17x = 70,095,199.95
5. Step 5: Solve for x
   x = 70,095,199.95/9,261.17
6. Step 6: Final answer
   x = 7,568.72