Finding the Fourth Proportional to 13,131.09, 19,704.23 and 5,234.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.09 : 19,704.23 = 5,234.35 : x
2. Step 2: Convert to fraction form
   13,131.09/19,704.23 = 5,234.35/x
3. Step 3: Cross multiply
   13,131.09x = 19,704.23 × 5,234.35
4. Step 4: Simplify right side
   13,131.09x = 103,138,836.30
5. Step 5: Solve for x
   x = 103,138,836.30/13,131.09
6. Step 6: Final answer
   x = 7,854.55