Finding the Fourth Proportional to 13,742.05, 18,963.46 and 7,773.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,742.05 : 18,963.46 = 7,773.83 : x
2. Step 2: Convert to fraction form
   13,742.05/18,963.46 = 7,773.83/x
3. Step 3: Cross multiply
   13,742.05x = 18,963.46 × 7,773.83
4. Step 4: Simplify right side
   13,742.05x = 147,418,714.25
5. Step 5: Solve for x
   x = 147,418,714.25/13,742.05
6. Step 6: Final answer
   x = 10,727.56