Finding the Fourth Proportional to 13,021.46, 19,530.37 and 5,118.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021.46 : 19,530.37 = 5,118.34 : x
2. Step 2: Convert to fraction form
   13,021.46/19,530.37 = 5,118.34/x
3. Step 3: Cross multiply
   13,021.46x = 19,530.37 × 5,118.34
4. Step 4: Simplify right side
   13,021.46x = 99,963,039.39
5. Step 5: Solve for x
   x = 99,963,039.39/13,021.46
6. Step 6: Final answer
   x = 7,676.79