Finding the Fourth Proportional to 12,943.78, 19,410.74 and 4,622.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,943.78 : 19,410.74 = 4,622.24 : x
2. Step 2: Convert to fraction form
   12,943.78/19,410.74 = 4,622.24/x
3. Step 3: Cross multiply
   12,943.78x = 19,410.74 × 4,622.24
4. Step 4: Simplify right side
   12,943.78x = 89,721,098.86
5. Step 5: Solve for x
   x = 89,721,098.86/12,943.78
6. Step 6: Final answer
   x = 6,931.60