Finding the Fourth Proportional to 10,111.05, 15,160.10 and 4,266.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.05 : 15,160.10 = 4,266.09 : x
2. Step 2: Convert to fraction form
   10,111.05/15,160.10 = 4,266.09/x
3. Step 3: Cross multiply
   10,111.05x = 15,160.10 × 4,266.09
4. Step 4: Simplify right side
   10,111.05x = 64,674,329.68
5. Step 5: Solve for x
   x = 64,674,329.68/10,111.05
6. Step 6: Final answer
   x = 6,396.40