Finding the Fourth Proportional to 12,511.98, 18,767.59 and 3,151.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,511.98 : 18,767.59 = 3,151.98 : x
2. Step 2: Convert to fraction form
   12,511.98/18,767.59 = 3,151.98/x
3. Step 3: Cross multiply
   12,511.98x = 18,767.59 × 3,151.98
4. Step 4: Simplify right side
   12,511.98x = 59,155,068.33
5. Step 5: Solve for x
   x = 59,155,068.33/12,511.98
6. Step 6: Final answer
   x = 4,727.87