Finding the Fourth Proportional to 9,111.40, 12,573.80 and 5,132.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.40 : 12,573.80 = 5,132.14 : x
2. Step 2: Convert to fraction form
   9,111.40/12,573.80 = 5,132.14/x
3. Step 3: Cross multiply
   9,111.40x = 12,573.80 × 5,132.14
4. Step 4: Simplify right side
   9,111.40x = 64,530,501.93
5. Step 5: Solve for x
   x = 64,530,501.93/9,111.40
6. Step 6: Final answer
   x = 7,082.39