Finding the Fourth Proportional to 10,418.56, 15,620.92 and 5,740.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,418.56 : 15,620.92 = 5,740.81 : x
2. Step 2: Convert to fraction form
   10,418.56/15,620.92 = 5,740.81/x
3. Step 3: Cross multiply
   10,418.56x = 15,620.92 × 5,740.81
4. Step 4: Simplify right side
   10,418.56x = 89,676,680.34
5. Step 5: Solve for x
   x = 89,676,680.34/10,418.56
6. Step 6: Final answer
   x = 8,607.40