Finding the Fourth Proportional to 9,634.72, 13,290.12 and 5,855.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,634.72 : 13,290.12 = 5,855.28 : x
2. Step 2: Convert to fraction form
   9,634.72/13,290.12 = 5,855.28/x
3. Step 3: Cross multiply
   9,634.72x = 13,290.12 × 5,855.28
4. Step 4: Simplify right side
   9,634.72x = 77,817,373.83
5. Step 5: Solve for x
   x = 77,817,373.83/9,634.72
6. Step 6: Final answer
   x = 8,076.77