Finding the Fourth Proportional to 12,890.56, 19,340.22 and 5,095.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890.56 : 19,340.22 = 5,095.12 : x
2. Step 2: Convert to fraction form
   12,890.56/19,340.22 = 5,095.12/x
3. Step 3: Cross multiply
   12,890.56x = 19,340.22 × 5,095.12
4. Step 4: Simplify right side
   12,890.56x = 98,540,741.73
5. Step 5: Solve for x
   x = 98,540,741.73/12,890.56
6. Step 6: Final answer
   x = 7,644.41