Finding the Fourth Proportional to 13,112.50, 19,669.02 and 3,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,112.50 : 19,669.02 = 3,878.50 : x
2. Step 2: Convert to fraction form
   13,112.50/19,669.02 = 3,878.50/x
3. Step 3: Cross multiply
   13,112.50x = 19,669.02 × 3,878.50
4. Step 4: Simplify right side
   13,112.50x = 76,286,294.07
5. Step 5: Solve for x
   x = 76,286,294.07/13,112.50
6. Step 6: Final answer
   x = 5,817.83