Finding the Fourth Proportional to 10,103.10, 15,162.38 and 5,172.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,103.10 : 15,162.38 = 5,172.32 : x
2. Step 2: Convert to fraction form
   10,103.10/15,162.38 = 5,172.32/x
3. Step 3: Cross multiply
   10,103.10x = 15,162.38 × 5,172.32
4. Step 4: Simplify right side
   10,103.10x = 78,424,681.32
5. Step 5: Solve for x
   x = 78,424,681.32/10,103.10
6. Step 6: Final answer
   x = 7,762.44