Finding the Fourth Proportional to 9,111.65, 12,575.27 and 5,133.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.65 : 12,575.27 = 5,133.53 : x
2. Step 2: Convert to fraction form
   9,111.65/12,575.27 = 5,133.53/x
3. Step 3: Cross multiply
   9,111.65x = 12,575.27 × 5,133.53
4. Step 4: Simplify right side
   9,111.65x = 64,555,500.14
5. Step 5: Solve for x
   x = 64,555,500.14/9,111.65
6. Step 6: Final answer
   x = 7,084.94