Finding the Fourth Proportional to 13,773.82, 19,007.78 and 7,486.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,773.82 : 19,007.78 = 7,486.20 : x
2. Step 2: Convert to fraction form
   13,773.82/19,007.78 = 7,486.20/x
3. Step 3: Cross multiply
   13,773.82x = 19,007.78 × 7,486.20
4. Step 4: Simplify right side
   13,773.82x = 142,296,042.64
5. Step 5: Solve for x
   x = 142,296,042.64/13,773.82
6. Step 6: Final answer
   x = 10,330.91