Finding the Fourth Proportional to 13,166.72, 19,749.78 and 4,282.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,166.72 : 19,749.78 = 4,282.34 : x
2. Step 2: Convert to fraction form
   13,166.72/19,749.78 = 4,282.34/x
3. Step 3: Cross multiply
   13,166.72x = 19,749.78 × 4,282.34
4. Step 4: Simplify right side
   13,166.72x = 84,575,272.89
5. Step 5: Solve for x
   x = 84,575,272.89/13,166.72
6. Step 6: Final answer
   x = 6,423.41