Finding the Fourth Proportional to 35,789.65, 53,667.18 and 13,284.81

Step by Step Solution

1. Step 1: Write the proportion equation
   35,789.65 : 53,667.18 = 13,284.81 : x
2. Step 2: Convert to fraction form
   35,789.65/53,667.18 = 13,284.81/x
3. Step 3: Cross multiply
   35,789.65x = 53,667.18 × 13,284.81
4. Step 4: Simplify right side
   35,789.65x = 712,958,223.11
5. Step 5: Solve for x
   x = 712,958,223.11/35,789.65
6. Step 6: Final answer
   x = 19,920.79