Finding the Fourth Proportional to 12,285.19, 18,424.59 and 3,518.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,285.19 : 18,424.59 = 3,518.07 : x
2. Step 2: Convert to fraction form
   12,285.19/18,424.59 = 3,518.07/x
3. Step 3: Cross multiply
   12,285.19x = 18,424.59 × 3,518.07
4. Step 4: Simplify right side
   12,285.19x = 64,818,997.34
5. Step 5: Solve for x
   x = 64,818,997.34/12,285.19
6. Step 6: Final answer
   x = 5,276.19