Finding the Fourth Proportional to 9,182.17, 12,671.62 and 5,405.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,182.17 : 12,671.62 = 5,405.53 : x
2. Step 2: Convert to fraction form
   9,182.17/12,671.62 = 5,405.53/x
3. Step 3: Cross multiply
   9,182.17x = 12,671.62 × 5,405.53
4. Step 4: Simplify right side
   9,182.17x = 68,496,822.06
5. Step 5: Solve for x
   x = 68,496,822.06/9,182.17
6. Step 6: Final answer
   x = 7,459.76