Finding the Fourth Proportional to 35,900.28, 53,819.64 and 13,698

Step by Step Solution

1. Step 1: Write the proportion equation
   35,900.28 : 53,819.64 = 13,698 : x
2. Step 2: Convert to fraction form
   35,900.28/53,819.64 = 13,698/x
3. Step 3: Cross multiply
   35,900.28x = 53,819.64 × 13,698
4. Step 4: Simplify right side
   35,900.28x = 737,221,428.72
5. Step 5: Solve for x
   x = 737,221,428.72/35,900.28
6. Step 6: Final answer
   x = 20,535.26