Finding the Fourth Proportional to 8,607.31, 12,909.32 and 2,365.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,607.31 : 12,909.32 = 2,365.76 : x
2. Step 2: Convert to fraction form
   8,607.31/12,909.32 = 2,365.76/x
3. Step 3: Cross multiply
   8,607.31x = 12,909.32 × 2,365.76
4. Step 4: Simplify right side
   8,607.31x = 30,540,322.89
5. Step 5: Solve for x
   x = 30,540,322.89/8,607.31
6. Step 6: Final answer
   x = 3,548.18