Finding the Fourth Proportional to 10,494.18, 15,741.31 and 3,920.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,494.18 : 15,741.31 = 3,920.30 : x
2. Step 2: Convert to fraction form
   10,494.18/15,741.31 = 3,920.30/x
3. Step 3: Cross multiply
   10,494.18x = 15,741.31 × 3,920.30
4. Step 4: Simplify right side
   10,494.18x = 61,710,657.59
5. Step 5: Solve for x
   x = 61,710,657.59/10,494.18
6. Step 6: Final answer
   x = 5,880.46