Finding the Fourth Proportional to 13,083.60, 18,052.92 and 7,779.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,083.60 : 18,052.92 = 7,779.72 : x
2. Step 2: Convert to fraction form
   13,083.60/18,052.92 = 7,779.72/x
3. Step 3: Cross multiply
   13,083.60x = 18,052.92 × 7,779.72
4. Step 4: Simplify right side
   13,083.60x = 140,446,662.78
5. Step 5: Solve for x
   x = 140,446,662.78/13,083.60
6. Step 6: Final answer
   x = 10,734.56