Finding the Fourth Proportional to 10,155.80, 14,014.42 and 5,618.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.80 : 14,014.42 = 5,618.22 : x
2. Step 2: Convert to fraction form
   10,155.80/14,014.42 = 5,618.22/x
3. Step 3: Cross multiply
   10,155.80x = 14,014.42 × 5,618.22
4. Step 4: Simplify right side
   10,155.80x = 78,736,094.73
5. Step 5: Solve for x
   x = 78,736,094.73/10,155.80
6. Step 6: Final answer
   x = 7,752.82