Finding the Fourth Proportional to 39,066.96, 53,908.52 and 21,836.10

Step by Step Solution

1. Step 1: Write the proportion equation
   39,066.96 : 53,908.52 = 21,836.10 : x
2. Step 2: Convert to fraction form
   39,066.96/53,908.52 = 21,836.10/x
3. Step 3: Cross multiply
   39,066.96x = 53,908.52 × 21,836.10
4. Step 4: Simplify right side
   39,066.96x = 1,177,151,833.57
5. Step 5: Solve for x
   x = 1,177,151,833.57/39,066.96
6. Step 6: Final answer
   x = 30,131.65