Finding the Fourth Proportional to 20,308.56, 30,459.69 and 7,834.43

Step by Step Solution

1. Step 1: Write the proportion equation
   20,308.56 : 30,459.69 = 7,834.43 : x
2. Step 2: Convert to fraction form
   20,308.56/30,459.69 = 7,834.43/x
3. Step 3: Cross multiply
   20,308.56x = 30,459.69 × 7,834.43
4. Step 4: Simplify right side
   20,308.56x = 238,634,156.83
5. Step 5: Solve for x
   x = 238,634,156.83/20,308.56
6. Step 6: Final answer
   x = 11,750.42