Finding the Fourth Proportional to 9,111.86, 12,574.60 and 5,133.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.86 : 12,574.60 = 5,133.12 : x
2. Step 2: Convert to fraction form
   9,111.86/12,574.60 = 5,133.12/x
3. Step 3: Cross multiply
   9,111.86x = 12,574.60 × 5,133.12
4. Step 4: Simplify right side
   9,111.86x = 64,546,930.75
5. Step 5: Solve for x
   x = 64,546,930.75/9,111.86
6. Step 6: Final answer
   x = 7,083.84