Finding the Fourth Proportional to 13,826.18, 20,739.34 and 3,437.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,826.18 : 20,739.34 = 3,437.93 : x
2. Step 2: Convert to fraction form
   13,826.18/20,739.34 = 3,437.93/x
3. Step 3: Cross multiply
   13,826.18x = 20,739.34 × 3,437.93
4. Step 4: Simplify right side
   13,826.18x = 71,300,455.31
5. Step 5: Solve for x
   x = 71,300,455.31/13,826.18
6. Step 6: Final answer
   x = 5,156.92