Finding the Fourth Proportional to 13,871.96, 19,142.31 and 7,902.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,871.96 : 19,142.31 = 7,902.53 : x
2. Step 2: Convert to fraction form
   13,871.96/19,142.31 = 7,902.53/x
3. Step 3: Cross multiply
   13,871.96x = 19,142.31 × 7,902.53
4. Step 4: Simplify right side
   13,871.96x = 151,272,583.33
5. Step 5: Solve for x
   x = 151,272,583.33/13,871.96
6. Step 6: Final answer
   x = 10,904.92