Finding the Fourth Proportional to 21,951, 32,741.55 and 18,399.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,951 : 32,741.55 = 18,399.86 : x
2. Step 2: Convert to fraction form
   21,951/32,741.55 = 18,399.86/x
3. Step 3: Cross multiply
   21,951x = 32,741.55 × 18,399.86
4. Step 4: Simplify right side
   21,951x = 602,439,895.26
5. Step 5: Solve for x
   x = 602,439,895.26/21,951
6. Step 6: Final answer
   x = 27,444.76