Finding the Fourth Proportional to 13,242.89, 19,864.31 and 4,483.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,242.89 : 19,864.31 = 4,483.96 : x
2. Step 2: Convert to fraction form
   13,242.89/19,864.31 = 4,483.96/x
3. Step 3: Cross multiply
   13,242.89x = 19,864.31 × 4,483.96
4. Step 4: Simplify right side
   13,242.89x = 89,070,699.39
5. Step 5: Solve for x
   x = 89,070,699.39/13,242.89
6. Step 6: Final answer
   x = 6,725.92