Finding the Fourth Proportional to 8,935.72, 13,404.80 and 3,090.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,935.72 : 13,404.80 = 3,090.76 : x
2. Step 2: Convert to fraction form
   8,935.72/13,404.80 = 3,090.76/x
3. Step 3: Cross multiply
   8,935.72x = 13,404.80 × 3,090.76
4. Step 4: Simplify right side
   8,935.72x = 41,431,019.65
5. Step 5: Solve for x
   x = 41,431,019.65/8,935.72
6. Step 6: Final answer
   x = 4,636.56