Finding the Fourth Proportional to 13,848.30, 19,111.86 and 7,878.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,848.30 : 19,111.86 = 7,878.69 : x
2. Step 2: Convert to fraction form
   13,848.30/19,111.86 = 7,878.69/x
3. Step 3: Cross multiply
   13,848.30x = 19,111.86 × 7,878.69
4. Step 4: Simplify right side
   13,848.30x = 150,576,420.26
5. Step 5: Solve for x
   x = 150,576,420.26/13,848.30
6. Step 6: Final answer
   x = 10,873.28