Finding the Fourth Proportional to 9,019.47, 12,436.74 and 5,828.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.47 : 12,436.74 = 5,828.57 : x
2. Step 2: Convert to fraction form
   9,019.47/12,436.74 = 5,828.57/x
3. Step 3: Cross multiply
   9,019.47x = 12,436.74 × 5,828.57
4. Step 4: Simplify right side
   9,019.47x = 72,488,347.48
5. Step 5: Solve for x
   x = 72,488,347.48/9,019.47
6. Step 6: Final answer
   x = 8,036.87