Finding the Fourth Proportional to 19,780.32, 29,682.15 and 7,309.17

Step by Step Solution

1. Step 1: Write the proportion equation
   19,780.32 : 29,682.15 = 7,309.17 : x
2. Step 2: Convert to fraction form
   19,780.32/29,682.15 = 7,309.17/x
3. Step 3: Cross multiply
   19,780.32x = 29,682.15 × 7,309.17
4. Step 4: Simplify right side
   19,780.32x = 216,951,880.32
5. Step 5: Solve for x
   x = 216,951,880.32/19,780.32
6. Step 6: Final answer
   x = 10,968.07