Finding the Fourth Proportional to 35,681.31, 53,519.91 and 10,720.83

Step by Step Solution

1. Step 1: Write the proportion equation
   35,681.31 : 53,519.91 = 10,720.83 : x
2. Step 2: Convert to fraction form
   35,681.31/53,519.91 = 10,720.83/x
3. Step 3: Cross multiply
   35,681.31x = 53,519.91 × 10,720.83
4. Step 4: Simplify right side
   35,681.31x = 573,777,856.73
5. Step 5: Solve for x
   x = 573,777,856.73/35,681.31
6. Step 6: Final answer
   x = 16,080.63