Finding the Fourth Proportional to 10,162.98, 15,242.18 and 3,920.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,162.98 : 15,242.18 = 3,920.91 : x
2. Step 2: Convert to fraction form
   10,162.98/15,242.18 = 3,920.91/x
3. Step 3: Cross multiply
   10,162.98x = 15,242.18 × 3,920.91
4. Step 4: Simplify right side
   10,162.98x = 59,763,196.38
5. Step 5: Solve for x
   x = 59,763,196.38/10,162.98
6. Step 6: Final answer
   x = 5,880.48