Finding the Fourth Proportional to 6,615.12, 9,112.59 and 5,667.84

Step by Step Solution

1. Step 1: Write the proportion equation
   6,615.12 : 9,112.59 = 5,667.84 : x
2. Step 2: Convert to fraction form
   6,615.12/9,112.59 = 5,667.84/x
3. Step 3: Cross multiply
   6,615.12x = 9,112.59 × 5,667.84
4. Step 4: Simplify right side
   6,615.12x = 51,648,702.11
5. Step 5: Solve for x
   x = 51,648,702.11/6,615.12
6. Step 6: Final answer
   x = 7,807.67