Finding the Fourth Proportional to 12,779.16, 17,635.56 and 7,474.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,779.16 : 17,635.56 = 7,474.32 : x
2. Step 2: Convert to fraction form
   12,779.16/17,635.56 = 7,474.32/x
3. Step 3: Cross multiply
   12,779.16x = 17,635.56 × 7,474.32
4. Step 4: Simplify right side
   12,779.16x = 131,813,818.82
5. Step 5: Solve for x
   x = 131,813,818.82/12,779.16
6. Step 6: Final answer
   x = 10,314.75