Finding the Fourth Proportional to 12,906.06, 19,355.57 and 3,543.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906.06 : 19,355.57 = 3,543.86 : x
2. Step 2: Convert to fraction form
   12,906.06/19,355.57 = 3,543.86/x
3. Step 3: Cross multiply
   12,906.06x = 19,355.57 × 3,543.86
4. Step 4: Simplify right side
   12,906.06x = 68,593,333.52
5. Step 5: Solve for x
   x = 68,593,333.52/12,906.06
6. Step 6: Final answer
   x = 5,314.82