Finding the Fourth Proportional to 13,109.50, 19,664.79 and 3,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.50 : 19,664.79 = 3,875.50 : x
2. Step 2: Convert to fraction form
   13,109.50/19,664.79 = 3,875.50/x
3. Step 3: Cross multiply
   13,109.50x = 19,664.79 × 3,875.50
4. Step 4: Simplify right side
   13,109.50x = 76,210,893.65
5. Step 5: Solve for x
   x = 76,210,893.65/13,109.50
6. Step 6: Final answer
   x = 5,813.41