Finding the Fourth Proportional to 17,018.04, 25,518.42 and 7,779

Step by Step Solution

1. Step 1: Write the proportion equation
   17,018.04 : 25,518.42 = 7,779 : x
2. Step 2: Convert to fraction form
   17,018.04/25,518.42 = 7,779/x
3. Step 3: Cross multiply
   17,018.04x = 25,518.42 × 7,779
4. Step 4: Simplify right side
   17,018.04x = 198,507,789.18
5. Step 5: Solve for x
   x = 198,507,789.18/17,018.04
6. Step 6: Final answer
   x = 11,664.55