Finding the Fourth Proportional to 10,538.18, 15,810.15 and 3,613.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538.18 : 15,810.15 = 3,613.22 : x
2. Step 2: Convert to fraction form
   10,538.18/15,810.15 = 3,613.22/x
3. Step 3: Cross multiply
   10,538.18x = 15,810.15 × 3,613.22
4. Step 4: Simplify right side
   10,538.18x = 57,125,550.18
5. Step 5: Solve for x
   x = 57,125,550.18/10,538.18
6. Step 6: Final answer
   x = 5,420.82