Finding the Fourth Proportional to 39,016.14, 53,842.67 and 21,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,016.14 : 53,842.67 = 21,111.50 : x
2. Step 2: Convert to fraction form
   39,016.14/53,842.67 = 21,111.50/x
3. Step 3: Cross multiply
   39,016.14x = 53,842.67 × 21,111.50
4. Step 4: Simplify right side
   39,016.14x = 1,136,699,152.93
5. Step 5: Solve for x
   x = 1,136,699,152.93/39,016.14
6. Step 6: Final answer
   x = 29,134.08