Finding the Fourth Proportional to 9,182.50, 12,671.70 and 5,405.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,182.50 : 12,671.70 = 5,405.22 : x
2. Step 2: Convert to fraction form
   9,182.50/12,671.70 = 5,405.22/x
3. Step 3: Cross multiply
   9,182.50x = 12,671.70 × 5,405.22
4. Step 4: Simplify right side
   9,182.50x = 68,493,326.27
5. Step 5: Solve for x
   x = 68,493,326.27/9,182.50
6. Step 6: Final answer
   x = 7,459.12