Finding the Fourth Proportional to 20,309.31, 30,460.82 and 7,835.18

Step by Step Solution

1. Step 1: Write the proportion equation
   20,309.31 : 30,460.82 = 7,835.18 : x
2. Step 2: Convert to fraction form
   20,309.31/30,460.82 = 7,835.18/x
3. Step 3: Cross multiply
   20,309.31x = 30,460.82 × 7,835.18
4. Step 4: Simplify right side
   20,309.31x = 238,665,816.17
5. Step 5: Solve for x
   x = 238,665,816.17/20,309.31
6. Step 6: Final answer
   x = 11,751.55