Finding the Fourth Proportional to 13,185.10, 19,771.88 and 3,948.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185.10 : 19,771.88 = 3,948.94 : x
2. Step 2: Convert to fraction form
   13,185.10/19,771.88 = 3,948.94/x
3. Step 3: Cross multiply
   13,185.10x = 19,771.88 × 3,948.94
4. Step 4: Simplify right side
   13,185.10x = 78,077,967.81
5. Step 5: Solve for x
   x = 78,077,967.81/13,185.10
6. Step 6: Final answer
   x = 5,921.68