Finding the Fourth Proportional to 13,085.98, 19,628.80 and 3,225.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.98 : 19,628.80 = 3,225.36 : x
2. Step 2: Convert to fraction form
   13,085.98/19,628.80 = 3,225.36/x
3. Step 3: Cross multiply
   13,085.98x = 19,628.80 × 3,225.36
4. Step 4: Simplify right side
   13,085.98x = 63,309,946.37
5. Step 5: Solve for x
   x = 63,309,946.37/13,085.98
6. Step 6: Final answer
   x = 4,838.00