Finding the Fourth Proportional to 6,622.59, 9,139.34 and 3,638.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,622.59 : 9,139.34 = 3,638.62 : x
2. Step 2: Convert to fraction form
   6,622.59/9,139.34 = 3,638.62/x
3. Step 3: Cross multiply
   6,622.59x = 9,139.34 × 3,638.62
4. Step 4: Simplify right side
   6,622.59x = 33,254,585.31
5. Step 5: Solve for x
   x = 33,254,585.31/6,622.59
6. Step 6: Final answer
   x = 5,021.39