Finding the Fourth Proportional to 11,780.72, 16,257.41 and 6,475.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,780.72 : 16,257.41 = 6,475.89 : x
2. Step 2: Convert to fraction form
   11,780.72/16,257.41 = 6,475.89/x
3. Step 3: Cross multiply
   11,780.72x = 16,257.41 × 6,475.89
4. Step 4: Simplify right side
   11,780.72x = 105,281,085.18
5. Step 5: Solve for x
   x = 105,281,085.18/11,780.72
6. Step 6: Final answer
   x = 8,936.73