Finding the Fourth Proportional to 12,947.51, 19,404.50 and 5,442.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.51 : 19,404.50 = 5,442.56 : x
2. Step 2: Convert to fraction form
   12,947.51/19,404.50 = 5,442.56/x
3. Step 3: Cross multiply
   12,947.51x = 19,404.50 × 5,442.56
4. Step 4: Simplify right side
   12,947.51x = 105,610,104.05
5. Step 5: Solve for x
   x = 105,610,104.05/12,947.51
6. Step 6: Final answer
   x = 8,156.79