Finding the Fourth Proportional to 9,111.84, 12,574.62 and 5,133.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.84 : 12,574.62 = 5,133.12 : x
2. Step 2: Convert to fraction form
   9,111.84/12,574.62 = 5,133.12/x
3. Step 3: Cross multiply
   9,111.84x = 12,574.62 × 5,133.12
4. Step 4: Simplify right side
   9,111.84x = 64,547,033.41
5. Step 5: Solve for x
   x = 64,547,033.41/9,111.84
6. Step 6: Final answer
   x = 7,083.86