Finding the Fourth Proportional to 9,180.99, 12,670.31 and 5,148.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,180.99 : 12,670.31 = 5,148.16 : x
2. Step 2: Convert to fraction form
   9,180.99/12,670.31 = 5,148.16/x
3. Step 3: Cross multiply
   9,180.99x = 12,670.31 × 5,148.16
4. Step 4: Simplify right side
   9,180.99x = 65,228,764.32
5. Step 5: Solve for x
   x = 65,228,764.32/9,180.99
6. Step 6: Final answer
   x = 7,104.76