Finding the Fourth Proportional to 31,460.81, 43,413.31 and 18,538.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,460.81 : 43,413.31 = 18,538.07 : x
2. Step 2: Convert to fraction form
   31,460.81/43,413.31 = 18,538.07/x
3. Step 3: Cross multiply
   31,460.81x = 43,413.31 × 18,538.07
4. Step 4: Simplify right side
   31,460.81x = 804,798,979.71
5. Step 5: Solve for x
   x = 804,798,979.71/31,460.81
6. Step 6: Final answer
   x = 25,581.00