Finding the Fourth Proportional to 11,572.50, 17,359.56 and 4,647

Step by Step Solution

1. Step 1: Write the proportion equation
   11,572.50 : 17,359.56 = 4,647 : x
2. Step 2: Convert to fraction form
   11,572.50/17,359.56 = 4,647/x
3. Step 3: Cross multiply
   11,572.50x = 17,359.56 × 4,647
4. Step 4: Simplify right side
   11,572.50x = 80,669,875.32
5. Step 5: Solve for x
   x = 80,669,875.32/11,572.50
6. Step 6: Final answer
   x = 6,970.83