Finding the Fourth Proportional to 12,906.32, 19,362 and 4,140.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906.32 : 19,362 = 4,140.56 : x
2. Step 2: Convert to fraction form
   12,906.32/19,362 = 4,140.56/x
3. Step 3: Cross multiply
   12,906.32x = 19,362 × 4,140.56
4. Step 4: Simplify right side
   12,906.32x = 80,169,522.72
5. Step 5: Solve for x
   x = 80,169,522.72/12,906.32
6. Step 6: Final answer
   x = 6,211.65