Finding the Fourth Proportional to 12,779.04, 17,637.69 and 7,475.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,779.04 : 17,637.69 = 7,475.16 : x
2. Step 2: Convert to fraction form
   12,779.04/17,637.69 = 7,475.16/x
3. Step 3: Cross multiply
   12,779.04x = 17,637.69 × 7,475.16
4. Step 4: Simplify right side
   12,779.04x = 131,844,466.59
5. Step 5: Solve for x
   x = 131,844,466.59/12,779.04
6. Step 6: Final answer
   x = 10,317.25