Finding the Fourth Proportional to 11,780.34, 16,230.69 and 7,581.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,780.34 : 16,230.69 = 7,581.30 : x
2. Step 2: Convert to fraction form
   11,780.34/16,230.69 = 7,581.30/x
3. Step 3: Cross multiply
   11,780.34x = 16,230.69 × 7,581.30
4. Step 4: Simplify right side
   11,780.34x = 123,049,730.10
5. Step 5: Solve for x
   x = 123,049,730.10/11,780.34
6. Step 6: Final answer
   x = 10,445.35