Finding the Fourth Proportional to 13,754.89, 18,980.76 and 7,787.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,754.89 : 18,980.76 = 7,787.23 : x
2. Step 2: Convert to fraction form
   13,754.89/18,980.76 = 7,787.23/x
3. Step 3: Cross multiply
   13,754.89x = 18,980.76 × 7,787.23
4. Step 4: Simplify right side
   13,754.89x = 147,807,543.69
5. Step 5: Solve for x
   x = 147,807,543.69/13,754.89
6. Step 6: Final answer
   x = 10,745.82