Finding the Fourth Proportional to 7,607.89, 11,404.08 and 5,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,607.89 : 11,404.08 = 5,142.96 : x
2. Step 2: Convert to fraction form
   7,607.89/11,404.08 = 5,142.96/x
3. Step 3: Cross multiply
   7,607.89x = 11,404.08 × 5,142.96
4. Step 4: Simplify right side
   7,607.89x = 58,650,727.28
5. Step 5: Solve for x
   x = 58,650,727.28/7,607.89
6. Step 6: Final answer
   x = 7,709.20