Finding the Fourth Proportional to 8,436.61, 12,654.96 and 5,533.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,436.61 : 12,654.96 = 5,533.30 : x
2. Step 2: Convert to fraction form
   8,436.61/12,654.96 = 5,533.30/x
3. Step 3: Cross multiply
   8,436.61x = 12,654.96 × 5,533.30
4. Step 4: Simplify right side
   8,436.61x = 70,023,690.17
5. Step 5: Solve for x
   x = 70,023,690.17/8,436.61
6. Step 6: Final answer
   x = 8,299.98