Finding the Fourth Proportional to 12,034.78, 18,055.30 and 5,012.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,034.78 : 18,055.30 = 5,012.58 : x
2. Step 2: Convert to fraction form
   12,034.78/18,055.30 = 5,012.58/x
3. Step 3: Cross multiply
   12,034.78x = 18,055.30 × 5,012.58
4. Step 4: Simplify right side
   12,034.78x = 90,503,635.67
5. Step 5: Solve for x
   x = 90,503,635.67/12,034.78
6. Step 6: Final answer
   x = 7,520.17