Finding the Fourth Proportional to 7,009.16, 9,672.59 and 3,865.35

Step by Step Solution

1. Step 1: Write the proportion equation
   7,009.16 : 9,672.59 = 3,865.35 : x
2. Step 2: Convert to fraction form
   7,009.16/9,672.59 = 3,865.35/x
3. Step 3: Cross multiply
   7,009.16x = 9,672.59 × 3,865.35
4. Step 4: Simplify right side
   7,009.16x = 37,387,926.43
5. Step 5: Solve for x
   x = 37,387,926.43/7,009.16
6. Step 6: Final answer
   x = 5,334.15