Finding the Fourth Proportional to 20,282.56, 30,437.40 and 7,134.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,282.56 : 30,437.40 = 7,134.88 : x
2. Step 2: Convert to fraction form
   20,282.56/30,437.40 = 7,134.88/x
3. Step 3: Cross multiply
   20,282.56x = 30,437.40 × 7,134.88
4. Step 4: Simplify right side
   20,282.56x = 217,167,196.51
5. Step 5: Solve for x
   x = 217,167,196.51/20,282.56
6. Step 6: Final answer
   x = 10,707.09