Finding the Fourth Proportional to 35,667.68, 53,468.76 and 12,288.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,667.68 : 53,468.76 = 12,288.56 : x
2. Step 2: Convert to fraction form
   35,667.68/53,468.76 = 12,288.56/x
3. Step 3: Cross multiply
   35,667.68x = 53,468.76 × 12,288.56
4. Step 4: Simplify right side
   35,667.68x = 657,054,065.39
5. Step 5: Solve for x
   x = 657,054,065.39/35,667.68
6. Step 6: Final answer
   x = 18,421.55