Finding the Fourth Proportional to 9,111.81, 12,574.34 and 5,133

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.81 : 12,574.34 = 5,133 : x
2. Step 2: Convert to fraction form
   9,111.81/12,574.34 = 5,133/x
3. Step 3: Cross multiply
   9,111.81x = 12,574.34 × 5,133
4. Step 4: Simplify right side
   9,111.81x = 64,544,087.22
5. Step 5: Solve for x
   x = 64,544,087.22/9,111.81
6. Step 6: Final answer
   x = 7,083.56