Finding the Fourth Proportional to 9,519.83, 13,136.89 and 5,212.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,519.83 : 13,136.89 = 5,212.81 : x
2. Step 2: Convert to fraction form
   9,519.83/13,136.89 = 5,212.81/x
3. Step 3: Cross multiply
   9,519.83x = 13,136.89 × 5,212.81
4. Step 4: Simplify right side
   9,519.83x = 68,480,111.56
5. Step 5: Solve for x
   x = 68,480,111.56/9,519.83
6. Step 6: Final answer
   x = 7,193.42