Finding the Fourth Proportional to 13,129.31, 19,693.56 and 3,268.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,129.31 : 19,693.56 = 3,268.58 : x
2. Step 2: Convert to fraction form
   13,129.31/19,693.56 = 3,268.58/x
3. Step 3: Cross multiply
   13,129.31x = 19,693.56 × 3,268.58
4. Step 4: Simplify right side
   13,129.31x = 64,369,976.34
5. Step 5: Solve for x
   x = 64,369,976.34/13,129.31
6. Step 6: Final answer
   x = 4,902.77