Finding the Fourth Proportional to 7,811.39, 11,667.16 and 7,069.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,811.39 : 11,667.16 = 7,069.82 : x
2. Step 2: Convert to fraction form
   7,811.39/11,667.16 = 7,069.82/x
3. Step 3: Cross multiply
   7,811.39x = 11,667.16 × 7,069.82
4. Step 4: Simplify right side
   7,811.39x = 82,484,721.11
5. Step 5: Solve for x
   x = 82,484,721.11/7,811.39
6. Step 6: Final answer
   x = 10,559.54