Finding the Fourth Proportional to 13,465.50, 18,583.83 and 7,881.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,465.50 : 18,583.83 = 7,881.18 : x
2. Step 2: Convert to fraction form
   13,465.50/18,583.83 = 7,881.18/x
3. Step 3: Cross multiply
   13,465.50x = 18,583.83 × 7,881.18
4. Step 4: Simplify right side
   13,465.50x = 146,462,509.32
5. Step 5: Solve for x
   x = 146,462,509.32/13,465.50
6. Step 6: Final answer
   x = 10,876.87