Finding the Fourth Proportional to 13,709.98, 18,919.83 and 7,741.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,709.98 : 18,919.83 = 7,741.72 : x
2. Step 2: Convert to fraction form
   13,709.98/18,919.83 = 7,741.72/x
3. Step 3: Cross multiply
   13,709.98x = 18,919.83 × 7,741.72
4. Step 4: Simplify right side
   13,709.98x = 146,472,026.31
5. Step 5: Solve for x
   x = 146,472,026.31/13,709.98
6. Step 6: Final answer
   x = 10,683.61