Finding the Fourth Proportional to 12,078, 18,124.29 and 5,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078 : 18,124.29 = 5,152.50 : x
2. Step 2: Convert to fraction form
   12,078/18,124.29 = 5,152.50/x
3. Step 3: Cross multiply
   12,078x = 18,124.29 × 5,152.50
4. Step 4: Simplify right side
   12,078x = 93,385,404.23
5. Step 5: Solve for x
   x = 93,385,404.23/12,078
6. Step 6: Final answer
   x = 7,731.86