Finding the Fourth Proportional to 13,136.02, 18,127.89 and 7,833.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,136.02 : 18,127.89 = 7,833.91 : x
2. Step 2: Convert to fraction form
   13,136.02/18,127.89 = 7,833.91/x
3. Step 3: Cross multiply
   13,136.02x = 18,127.89 × 7,833.91
4. Step 4: Simplify right side
   13,136.02x = 142,012,258.75
5. Step 5: Solve for x
   x = 142,012,258.75/13,136.02
6. Step 6: Final answer
   x = 10,810.90