Finding the Fourth Proportional to 12,200.03, 18,301.29 and 3,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.03 : 18,301.29 = 3,315.50 : x
2. Step 2: Convert to fraction form
   12,200.03/18,301.29 = 3,315.50/x
3. Step 3: Cross multiply
   12,200.03x = 18,301.29 × 3,315.50
4. Step 4: Simplify right side
   12,200.03x = 60,677,927.00
5. Step 5: Solve for x
   x = 60,677,927.00/12,200.03
6. Step 6: Final answer
   x = 4,973.59