Finding the Fourth Proportional to 8,087.30, 12,047.49 and 7,842.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,087.30 : 12,047.49 = 7,842.56 : x
2. Step 2: Convert to fraction form
   8,087.30/12,047.49 = 7,842.56/x
3. Step 3: Cross multiply
   8,087.30x = 12,047.49 × 7,842.56
4. Step 4: Simplify right side
   8,087.30x = 94,483,123.96
5. Step 5: Solve for x
   x = 94,483,123.96/8,087.30
6. Step 6: Final answer
   x = 11,682.90