Finding the Fourth Proportional to 8,901.61, 13,362.72 and 5,206.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,901.61 : 13,362.72 = 5,206.49 : x
2. Step 2: Convert to fraction form
   8,901.61/13,362.72 = 5,206.49/x
3. Step 3: Cross multiply
   8,901.61x = 13,362.72 × 5,206.49
4. Step 4: Simplify right side
   8,901.61x = 69,572,801.24
5. Step 5: Solve for x
   x = 69,572,801.24/8,901.61
6. Step 6: Final answer
   x = 7,815.76