Finding the Fourth Proportional to 10,131.79, 15,199.21 and 3,556.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.79 : 15,199.21 = 3,556.82 : x
2. Step 2: Convert to fraction form
   10,131.79/15,199.21 = 3,556.82/x
3. Step 3: Cross multiply
   10,131.79x = 15,199.21 × 3,556.82
4. Step 4: Simplify right side
   10,131.79x = 54,060,854.11
5. Step 5: Solve for x
   x = 54,060,854.11/10,131.79
6. Step 6: Final answer
   x = 5,335.77