Finding the Fourth Proportional to 34,648.12, 51,980.82 and 13,871.08

Step by Step Solution

1. Step 1: Write the proportion equation
   34,648.12 : 51,980.82 = 13,871.08 : x
2. Step 2: Convert to fraction form
   34,648.12/51,980.82 = 13,871.08/x
3. Step 3: Cross multiply
   34,648.12x = 51,980.82 × 13,871.08
4. Step 4: Simplify right side
   34,648.12x = 721,030,112.69
5. Step 5: Solve for x
   x = 721,030,112.69/34,648.12
6. Step 6: Final answer
   x = 20,810.08