Finding the Fourth Proportional to 39,495.24, 59,245.98 and 13,200.12

Step by Step Solution

1. Step 1: Write the proportion equation
   39,495.24 : 59,245.98 = 13,200.12 : x
2. Step 2: Convert to fraction form
   39,495.24/59,245.98 = 13,200.12/x
3. Step 3: Cross multiply
   39,495.24x = 59,245.98 × 13,200.12
4. Step 4: Simplify right side
   39,495.24x = 782,054,045.52
5. Step 5: Solve for x
   x = 782,054,045.52/39,495.24
6. Step 6: Final answer
   x = 19,801.22