Finding the Fourth Proportional to 13,825.42, 19,079.59 and 7,858.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,825.42 : 19,079.59 = 7,858.10 : x
2. Step 2: Convert to fraction form
   13,825.42/19,079.59 = 7,858.10/x
3. Step 3: Cross multiply
   13,825.42x = 19,079.59 × 7,858.10
4. Step 4: Simplify right side
   13,825.42x = 149,929,326.18
5. Step 5: Solve for x
   x = 149,929,326.18/13,825.42
6. Step 6: Final answer
   x = 10,844.47