Finding the Fourth Proportional to 8,045.19, 12,081.17 and 5,429.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,045.19 : 12,081.17 = 5,429.52 : x
2. Step 2: Convert to fraction form
   8,045.19/12,081.17 = 5,429.52/x
3. Step 3: Cross multiply
   8,045.19x = 12,081.17 × 5,429.52
4. Step 4: Simplify right side
   8,045.19x = 65,594,926.99
5. Step 5: Solve for x
   x = 65,594,926.99/8,045.19
6. Step 6: Final answer
   x = 8,153.31