Finding the Fourth Proportional to 35,659.68, 53,456.76 and 12,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,659.68 : 53,456.76 = 12,280.56 : x
2. Step 2: Convert to fraction form
   35,659.68/53,456.76 = 12,280.56/x
3. Step 3: Cross multiply
   35,659.68x = 53,456.76 × 12,280.56
4. Step 4: Simplify right side
   35,659.68x = 656,478,948.59
5. Step 5: Solve for x
   x = 656,478,948.59/35,659.68
6. Step 6: Final answer
   x = 18,409.56