Finding the Fourth Proportional to 21,457.51, 32,178.37 and 7,413.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,457.51 : 32,178.37 = 7,413.93 : x
2. Step 2: Convert to fraction form
   21,457.51/32,178.37 = 7,413.93/x
3. Step 3: Cross multiply
   21,457.51x = 32,178.37 × 7,413.93
4. Step 4: Simplify right side
   21,457.51x = 238,568,182.69
5. Step 5: Solve for x
   x = 238,568,182.69/21,457.51
6. Step 6: Final answer
   x = 11,118.17