Finding the Fourth Proportional to 13,141.23, 19,709.72 and 3,779.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,141.23 : 19,709.72 = 3,779.12 : x
2. Step 2: Convert to fraction form
   13,141.23/19,709.72 = 3,779.12/x
3. Step 3: Cross multiply
   13,141.23x = 19,709.72 × 3,779.12
4. Step 4: Simplify right side
   13,141.23x = 74,485,279.60
5. Step 5: Solve for x
   x = 74,485,279.60/13,141.23
6. Step 6: Final answer
   x = 5,668.06