Finding the Fourth Proportional to 35,878.27, 53,825.60 and 10,921.86

Step by Step Solution

1. Step 1: Write the proportion equation
   35,878.27 : 53,825.60 = 10,921.86 : x
2. Step 2: Convert to fraction form
   35,878.27/53,825.60 = 10,921.86/x
3. Step 3: Cross multiply
   35,878.27x = 53,825.60 × 10,921.86
4. Step 4: Simplify right side
   35,878.27x = 587,875,667.62
5. Step 5: Solve for x
   x = 587,875,667.62/35,878.27
6. Step 6: Final answer
   x = 16,385.28