Finding the Fourth Proportional to 12,200.79, 18,296.59 and 4,801.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.79 : 18,296.59 = 4,801.20 : x
2. Step 2: Convert to fraction form
   12,200.79/18,296.59 = 4,801.20/x
3. Step 3: Cross multiply
   12,200.79x = 18,296.59 × 4,801.20
4. Step 4: Simplify right side
   12,200.79x = 87,845,587.91
5. Step 5: Solve for x
   x = 87,845,587.91/12,200.79
6. Step 6: Final answer
   x = 7,199.99