Finding the Fourth Proportional to 13,118.16, 19,669.92 and 4,350.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.16 : 19,669.92 = 4,350.72 : x
2. Step 2: Convert to fraction form
   13,118.16/19,669.92 = 4,350.72/x
3. Step 3: Cross multiply
   13,118.16x = 19,669.92 × 4,350.72
4. Step 4: Simplify right side
   13,118.16x = 85,578,314.34
5. Step 5: Solve for x
   x = 85,578,314.34/13,118.16
6. Step 6: Final answer
   x = 6,523.65