Finding the Fourth Proportional to 9,005.59, 12,431.51 and 5,469.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.59 : 12,431.51 = 5,469.94 : x
2. Step 2: Convert to fraction form
   9,005.59/12,431.51 = 5,469.94/x
3. Step 3: Cross multiply
   9,005.59x = 12,431.51 × 5,469.94
4. Step 4: Simplify right side
   9,005.59x = 67,999,613.81
5. Step 5: Solve for x
   x = 67,999,613.81/9,005.59
6. Step 6: Final answer
   x = 7,550.82