Finding the Fourth Proportional to 9,281.90, 12,808.32 and 5,090.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,281.90 : 12,808.32 = 5,090.15 : x
2. Step 2: Convert to fraction form
   9,281.90/12,808.32 = 5,090.15/x
3. Step 3: Cross multiply
   9,281.90x = 12,808.32 × 5,090.15
4. Step 4: Simplify right side
   9,281.90x = 65,196,270.05
5. Step 5: Solve for x
   x = 65,196,270.05/9,281.90
6. Step 6: Final answer
   x = 7,024.02