Finding the Fourth Proportional to 8,906.99, 12,291.76 and 5,130.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,906.99 : 12,291.76 = 5,130.82 : x
2. Step 2: Convert to fraction form
   8,906.99/12,291.76 = 5,130.82/x
3. Step 3: Cross multiply
   8,906.99x = 12,291.76 × 5,130.82
4. Step 4: Simplify right side
   8,906.99x = 63,066,829.82
5. Step 5: Solve for x
   x = 63,066,829.82/8,906.99
6. Step 6: Final answer
   x = 7,080.60