Finding the Fourth Proportional to 9,693.78, 14,539.86 and 3,118.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,693.78 : 14,539.86 = 3,118.20 : x
2. Step 2: Convert to fraction form
   9,693.78/14,539.86 = 3,118.20/x
3. Step 3: Cross multiply
   9,693.78x = 14,539.86 × 3,118.20
4. Step 4: Simplify right side
   9,693.78x = 45,338,191.45
5. Step 5: Solve for x
   x = 45,338,191.45/9,693.78
6. Step 6: Final answer
   x = 4,677.04