Finding the Fourth Proportional to 13,577.16, 18,735.71 and 7,912.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,577.16 : 18,735.71 = 7,912.83 : x
2. Step 2: Convert to fraction form
   13,577.16/18,735.71 = 7,912.83/x
3. Step 3: Cross multiply
   13,577.16x = 18,735.71 × 7,912.83
4. Step 4: Simplify right side
   13,577.16x = 148,252,488.16
5. Step 5: Solve for x
   x = 148,252,488.16/13,577.16
6. Step 6: Final answer
   x = 10,919.26