Finding the Fourth Proportional to 13,902.83, 19,178.33 and 8,858.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,902.83 : 19,178.33 = 8,858.15 : x
2. Step 2: Convert to fraction form
   13,902.83/19,178.33 = 8,858.15/x
3. Step 3: Cross multiply
   13,902.83x = 19,178.33 × 8,858.15
4. Step 4: Simplify right side
   13,902.83x = 169,884,523.89
5. Step 5: Solve for x
   x = 169,884,523.89/13,902.83
6. Step 6: Final answer
   x = 12,219.42