Finding the Fourth Proportional to 12,038.50, 18,061.35 and 5,113.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,038.50 : 18,061.35 = 5,113.54 : x
2. Step 2: Convert to fraction form
   12,038.50/18,061.35 = 5,113.54/x
3. Step 3: Cross multiply
   12,038.50x = 18,061.35 × 5,113.54
4. Step 4: Simplify right side
   12,038.50x = 92,357,435.68
5. Step 5: Solve for x
   x = 92,357,435.68/12,038.50
6. Step 6: Final answer
   x = 7,671.84