Finding the Fourth Proportional to 9,019.88, 13,531.12 and 2,780.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.88 : 13,531.12 = 2,780.42 : x
2. Step 2: Convert to fraction form
   9,019.88/13,531.12 = 2,780.42/x
3. Step 3: Cross multiply
   9,019.88x = 13,531.12 × 2,780.42
4. Step 4: Simplify right side
   9,019.88x = 37,622,196.67
5. Step 5: Solve for x
   x = 37,622,196.67/9,019.88
6. Step 6: Final answer
   x = 4,171.03