Finding the Fourth Proportional to 11,530.08, 15,918.12 and 7,758.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,530.08 : 15,918.12 = 7,758.72 : x
2. Step 2: Convert to fraction form
   11,530.08/15,918.12 = 7,758.72/x
3. Step 3: Cross multiply
   11,530.08x = 15,918.12 × 7,758.72
4. Step 4: Simplify right side
   11,530.08x = 123,504,236.01
5. Step 5: Solve for x
   x = 123,504,236.01/11,530.08
6. Step 6: Final answer
   x = 10,711.48