Finding the Fourth Proportional to 10,089.72, 15,134.13 and 3,069.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.72 : 15,134.13 = 3,069.90 : x
2. Step 2: Convert to fraction form
   10,089.72/15,134.13 = 3,069.90/x
3. Step 3: Cross multiply
   10,089.72x = 15,134.13 × 3,069.90
4. Step 4: Simplify right side
   10,089.72x = 46,460,265.69
5. Step 5: Solve for x
   x = 46,460,265.69/10,089.72
6. Step 6: Final answer
   x = 4,604.71