Finding the Fourth Proportional to 13,100.21, 19,650.49 and 5,704.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.21 : 19,650.49 = 5,704.40 : x
2. Step 2: Convert to fraction form
   13,100.21/19,650.49 = 5,704.40/x
3. Step 3: Cross multiply
   13,100.21x = 19,650.49 × 5,704.40
4. Step 4: Simplify right side
   13,100.21x = 112,094,191.96
5. Step 5: Solve for x
   x = 112,094,191.96/13,100.21
6. Step 6: Final answer
   x = 8,556.67