Finding the Fourth Proportional to 13,200.56, 18,219.12 and 7,895.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.56 : 18,219.12 = 7,895.96 : x
2. Step 2: Convert to fraction form
   13,200.56/18,219.12 = 7,895.96/x
3. Step 3: Cross multiply
   13,200.56x = 18,219.12 × 7,895.96
4. Step 4: Simplify right side
   13,200.56x = 143,857,442.76
5. Step 5: Solve for x
   x = 143,857,442.76/13,200.56
6. Step 6: Final answer
   x = 10,897.83