Finding the Fourth Proportional to 7,605.90, 10,487.34 and 5,580.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,605.90 : 10,487.34 = 5,580.09 : x
2. Step 2: Convert to fraction form
   7,605.90/10,487.34 = 5,580.09/x
3. Step 3: Cross multiply
   7,605.90x = 10,487.34 × 5,580.09
4. Step 4: Simplify right side
   7,605.90x = 58,520,301.06
5. Step 5: Solve for x
   x = 58,520,301.06/7,605.90
6. Step 6: Final answer
   x = 7,694.07