Finding the Fourth Proportional to 9,000.33, 12,419.87 and 5,643

Step by Step Solution

1. Step 1: Write the proportion equation
   9,000.33 : 12,419.87 = 5,643 : x
2. Step 2: Convert to fraction form
   9,000.33/12,419.87 = 5,643/x
3. Step 3: Cross multiply
   9,000.33x = 12,419.87 × 5,643
4. Step 4: Simplify right side
   9,000.33x = 70,085,298.20
5. Step 5: Solve for x
   x = 70,085,298.20/9,000.33
6. Step 6: Final answer
   x = 7,786.97