Finding the Fourth Proportional to 13,103.69, 18,086.12 and 7,801.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,103.69 : 18,086.12 = 7,801.53 : x
2. Step 2: Convert to fraction form
   13,103.69/18,086.12 = 7,801.53/x
3. Step 3: Cross multiply
   13,103.69x = 18,086.12 × 7,801.53
4. Step 4: Simplify right side
   13,103.69x = 141,099,368.76
5. Step 5: Solve for x
   x = 141,099,368.76/13,103.69
6. Step 6: Final answer
   x = 10,767.92