Finding the Fourth Proportional to 13,312.83, 19,973.23 and 3,953.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,312.83 : 19,973.23 = 3,953.15 : x
2. Step 2: Convert to fraction form
   13,312.83/19,973.23 = 3,953.15/x
3. Step 3: Cross multiply
   13,312.83x = 19,973.23 × 3,953.15
4. Step 4: Simplify right side
   13,312.83x = 78,957,273.91
5. Step 5: Solve for x
   x = 78,957,273.91/13,312.83
6. Step 6: Final answer
   x = 5,930.92