Finding the Fourth Proportional to 13,156.36, 18,155.30 and 7,848.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,156.36 : 18,155.30 = 7,848.42 : x
2. Step 2: Convert to fraction form
   13,156.36/18,155.30 = 7,848.42/x
3. Step 3: Cross multiply
   13,156.36x = 18,155.30 × 7,848.42
4. Step 4: Simplify right side
   13,156.36x = 142,490,419.63
5. Step 5: Solve for x
   x = 142,490,419.63/13,156.36
6. Step 6: Final answer
   x = 10,830.54