Finding the Fourth Proportional to 13,808.33, 19,051.31 and 7,839.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,808.33 : 19,051.31 = 7,839.89 : x
2. Step 2: Convert to fraction form
   13,808.33/19,051.31 = 7,839.89/x
3. Step 3: Cross multiply
   13,808.33x = 19,051.31 × 7,839.89
4. Step 4: Simplify right side
   13,808.33x = 149,360,135.56
5. Step 5: Solve for x
   x = 149,360,135.56/13,808.33
6. Step 6: Final answer
   x = 10,816.67