Finding the Fourth Proportional to 9,169.82, 12,654.38 and 4,978.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,169.82 : 12,654.38 = 4,978.07 : x
2. Step 2: Convert to fraction form
   9,169.82/12,654.38 = 4,978.07/x
3. Step 3: Cross multiply
   9,169.82x = 12,654.38 × 4,978.07
4. Step 4: Simplify right side
   9,169.82x = 62,994,301.28
5. Step 5: Solve for x
   x = 62,994,301.28/9,169.82
6. Step 6: Final answer
   x = 6,869.75