Finding the Fourth Proportional to 12,003.40, 18,004.59 and 4,106.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.40 : 18,004.59 = 4,106.62 : x
2. Step 2: Convert to fraction form
   12,003.40/18,004.59 = 4,106.62/x
3. Step 3: Cross multiply
   12,003.40x = 18,004.59 × 4,106.62
4. Step 4: Simplify right side
   12,003.40x = 73,938,070.98
5. Step 5: Solve for x
   x = 73,938,070.98/12,003.40
6. Step 6: Final answer
   x = 6,159.76