Finding the Fourth Proportional to 11,500.04, 15,867.18 and 7,022.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,500.04 : 15,867.18 = 7,022.13 : x
2. Step 2: Convert to fraction form
   11,500.04/15,867.18 = 7,022.13/x
3. Step 3: Cross multiply
   11,500.04x = 15,867.18 × 7,022.13
4. Step 4: Simplify right side
   11,500.04x = 111,421,400.69
5. Step 5: Solve for x
   x = 111,421,400.69/11,500.04
6. Step 6: Final answer
   x = 9,688.79