Finding the Fourth Proportional to 9,786.58, 14,686.06 and 5,115.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,786.58 : 14,686.06 = 5,115.02 : x
2. Step 2: Convert to fraction form
   9,786.58/14,686.06 = 5,115.02/x
3. Step 3: Cross multiply
   9,786.58x = 14,686.06 × 5,115.02
4. Step 4: Simplify right side
   9,786.58x = 75,119,490.62
5. Step 5: Solve for x
   x = 75,119,490.62/9,786.58
6. Step 6: Final answer
   x = 7,675.77