Finding the Fourth Proportional to 9,069.20, 12,515.72 and 5,090.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,069.20 : 12,515.72 = 5,090.16 : x
2. Step 2: Convert to fraction form
   9,069.20/12,515.72 = 5,090.16/x
3. Step 3: Cross multiply
   9,069.20x = 12,515.72 × 5,090.16
4. Step 4: Simplify right side
   9,069.20x = 63,707,017.32
5. Step 5: Solve for x
   x = 63,707,017.32/9,069.20
6. Step 6: Final answer
   x = 7,024.55