Finding the Fourth Proportional to 10,155.21, 15,222.42 and 5,763.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.21 : 15,222.42 = 5,763.39 : x
2. Step 2: Convert to fraction form
   10,155.21/15,222.42 = 5,763.39/x
3. Step 3: Cross multiply
   10,155.21x = 15,222.42 × 5,763.39
4. Step 4: Simplify right side
   10,155.21x = 87,732,743.20
5. Step 5: Solve for x
   x = 87,732,743.20/10,155.21
6. Step 6: Final answer
   x = 8,639.19