Finding the Fourth Proportional to 10,131.54, 15,193.64 and 4,288.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.54 : 15,193.64 = 4,288.56 : x
2. Step 2: Convert to fraction form
   10,131.54/15,193.64 = 4,288.56/x
3. Step 3: Cross multiply
   10,131.54x = 15,193.64 × 4,288.56
4. Step 4: Simplify right side
   10,131.54x = 65,158,836.76
5. Step 5: Solve for x
   x = 65,158,836.76/10,131.54
6. Step 6: Final answer
   x = 6,431.29