Finding the Fourth Proportional to 7,288.89, 10,938.73 and 5,419.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,288.89 : 10,938.73 = 5,419.10 : x
2. Step 2: Convert to fraction form
   7,288.89/10,938.73 = 5,419.10/x
3. Step 3: Cross multiply
   7,288.89x = 10,938.73 × 5,419.10
4. Step 4: Simplify right side
   7,288.89x = 59,278,071.74
5. Step 5: Solve for x
   x = 59,278,071.74/7,288.89
6. Step 6: Final answer
   x = 8,132.66