Finding the Fourth Proportional to 13,109.25, 19,667.12 and 3,875.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.25 : 19,667.12 = 3,875.25 : x
2. Step 2: Convert to fraction form
   13,109.25/19,667.12 = 3,875.25/x
3. Step 3: Cross multiply
   13,109.25x = 19,667.12 × 3,875.25
4. Step 4: Simplify right side
   13,109.25x = 76,214,987.40
5. Step 5: Solve for x
   x = 76,214,987.40/13,109.25
6. Step 6: Final answer
   x = 5,813.83