Finding the Fourth Proportional to 34,686.56, 52,043.69 and 20,653.20

Step by Step Solution

1. Step 1: Write the proportion equation
   34,686.56 : 52,043.69 = 20,653.20 : x
2. Step 2: Convert to fraction form
   34,686.56/52,043.69 = 20,653.20/x
3. Step 3: Cross multiply
   34,686.56x = 52,043.69 × 20,653.20
4. Step 4: Simplify right side
   34,686.56x = 1,074,868,789.94
5. Step 5: Solve for x
   x = 1,074,868,789.94/34,686.56
6. Step 6: Final answer
   x = 30,988.05