Finding the Fourth Proportional to 9,262.17, 12,781.88 and 5,485.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.17 : 12,781.88 = 5,485.55 : x
2. Step 2: Convert to fraction form
   9,262.17/12,781.88 = 5,485.55/x
3. Step 3: Cross multiply
   9,262.17x = 12,781.88 × 5,485.55
4. Step 4: Simplify right side
   9,262.17x = 70,115,641.83
5. Step 5: Solve for x
   x = 70,115,641.83/9,262.17
6. Step 6: Final answer
   x = 7,570.11