Finding the Fourth Proportional to 11,457.05, 15,830.39 and 8,264.03

Step by Step Solution

1. Step 1: Write the proportion equation
   11,457.05 : 15,830.39 = 8,264.03 : x
2. Step 2: Convert to fraction form
   11,457.05/15,830.39 = 8,264.03/x
3. Step 3: Cross multiply
   11,457.05x = 15,830.39 × 8,264.03
4. Step 4: Simplify right side
   11,457.05x = 130,822,712.89
5. Step 5: Solve for x
   x = 130,822,712.89/11,457.05
6. Step 6: Final answer
   x = 11,418.54