Finding the Fourth Proportional to 12,922.56, 19,386.24 and 4,156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922.56 : 19,386.24 = 4,156.56 : x
2. Step 2: Convert to fraction form
   12,922.56/19,386.24 = 4,156.56/x
3. Step 3: Cross multiply
   12,922.56x = 19,386.24 × 4,156.56
4. Step 4: Simplify right side
   12,922.56x = 80,580,069.73
5. Step 5: Solve for x
   x = 80,580,069.73/12,922.56
6. Step 6: Final answer
   x = 6,235.61