Finding the Fourth Proportional to 8,066.31, 11,135.25 and 5,381.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,066.31 : 11,135.25 = 5,381.99 : x
2. Step 2: Convert to fraction form
   8,066.31/11,135.25 = 5,381.99/x
3. Step 3: Cross multiply
   8,066.31x = 11,135.25 × 5,381.99
4. Step 4: Simplify right side
   8,066.31x = 59,929,804.15
5. Step 5: Solve for x
   x = 59,929,804.15/8,066.31
6. Step 6: Final answer
   x = 7,429.64