Finding the Fourth Proportional to 10,111.66, 15,167.72 and 3,448.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.66 : 15,167.72 = 3,448.15 : x
2. Step 2: Convert to fraction form
   10,111.66/15,167.72 = 3,448.15/x
3. Step 3: Cross multiply
   10,111.66x = 15,167.72 × 3,448.15
4. Step 4: Simplify right side
   10,111.66x = 52,300,556.48
5. Step 5: Solve for x
   x = 52,300,556.48/10,111.66
6. Step 6: Final answer
   x = 5,172.30