Finding the Fourth Proportional to 12,155.03, 18,235.62 and 3,389.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.03 : 18,235.62 = 3,389.94 : x
2. Step 2: Convert to fraction form
   12,155.03/18,235.62 = 3,389.94/x
3. Step 3: Cross multiply
   12,155.03x = 18,235.62 × 3,389.94
4. Step 4: Simplify right side
   12,155.03x = 61,817,673.77
5. Step 5: Solve for x
   x = 61,817,673.77/12,155.03
6. Step 6: Final answer
   x = 5,085.77