Finding the Fourth Proportional to 13,071.42, 18,039.00 and 7,692.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.42 : 18,039.00 = 7,692.89 : x
2. Step 2: Convert to fraction form
   13,071.42/18,039.00 = 7,692.89/x
3. Step 3: Cross multiply
   13,071.42x = 18,039.00 × 7,692.89
4. Step 4: Simplify right side
   13,071.42x = 138,771,914.05
5. Step 5: Solve for x
   x = 138,771,914.05/13,071.42
6. Step 6: Final answer
   x = 10,616.44