Finding the Fourth Proportional to 8,462.40, 12,671.72 and 5,531.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,462.40 : 12,671.72 = 5,531.84 : x
2. Step 2: Convert to fraction form
   8,462.40/12,671.72 = 5,531.84/x
3. Step 3: Cross multiply
   8,462.40x = 12,671.72 × 5,531.84
4. Step 4: Simplify right side
   8,462.40x = 70,097,927.56
5. Step 5: Solve for x
   x = 70,097,927.56/8,462.40
6. Step 6: Final answer
   x = 8,283.46