Finding the Fourth Proportional to 12,961.30, 19,442.04 and 5,559.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.30 : 19,442.04 = 5,559.52 : x
2. Step 2: Convert to fraction form
   12,961.30/19,442.04 = 5,559.52/x
3. Step 3: Cross multiply
   12,961.30x = 19,442.04 × 5,559.52
4. Step 4: Simplify right side
   12,961.30x = 108,088,410.22
5. Step 5: Solve for x
   x = 108,088,410.22/12,961.30
6. Step 6: Final answer
   x = 8,339.32