Finding the Fourth Proportional to 13,774.42, 19,008.81 and 7,486.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,774.42 : 19,008.81 = 7,486.78 : x
2. Step 2: Convert to fraction form
   13,774.42/19,008.81 = 7,486.78/x
3. Step 3: Cross multiply
   13,774.42x = 19,008.81 × 7,486.78
4. Step 4: Simplify right side
   13,774.42x = 142,314,778.53
5. Step 5: Solve for x
   x = 142,314,778.53/13,774.42
6. Step 6: Final answer
   x = 10,331.82