Finding the Fourth Proportional to 9,090.48, 12,544.43 and 5,111.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.48 : 12,544.43 = 5,111.97 : x
2. Step 2: Convert to fraction form
   9,090.48/12,544.43 = 5,111.97/x
3. Step 3: Cross multiply
   9,090.48x = 12,544.43 × 5,111.97
4. Step 4: Simplify right side
   9,090.48x = 64,126,724.27
5. Step 5: Solve for x
   x = 64,126,724.27/9,090.48
6. Step 6: Final answer
   x = 7,054.27