Finding the Fourth Proportional to 9,045.20, 12,483.30 and 5,690.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,045.20 : 12,483.30 = 5,690.58 : x
2. Step 2: Convert to fraction form
   9,045.20/12,483.30 = 5,690.58/x
3. Step 3: Cross multiply
   9,045.20x = 12,483.30 × 5,690.58
4. Step 4: Simplify right side
   9,045.20x = 71,037,217.31
5. Step 5: Solve for x
   x = 71,037,217.31/9,045.20
6. Step 6: Final answer
   x = 7,853.59