Finding the Fourth Proportional to 13,116.51, 18,103.74 and 7,814.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,116.51 : 18,103.74 = 7,814.25 : x
2. Step 2: Convert to fraction form
   13,116.51/18,103.74 = 7,814.25/x
3. Step 3: Cross multiply
   13,116.51x = 18,103.74 × 7,814.25
4. Step 4: Simplify right side
   13,116.51x = 141,467,150.30
5. Step 5: Solve for x
   x = 141,467,150.30/13,116.51
6. Step 6: Final answer
   x = 10,785.43