Finding the Fourth Proportional to 11,870.63, 16,380.05 and 6,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.63 : 16,380.05 = 6,564.72 : x
2. Step 2: Convert to fraction form
   11,870.63/16,380.05 = 6,564.72/x
3. Step 3: Cross multiply
   11,870.63x = 16,380.05 × 6,564.72
4. Step 4: Simplify right side
   11,870.63x = 107,530,409.01
5. Step 5: Solve for x
   x = 107,530,409.01/11,870.63
6. Step 6: Final answer
   x = 9,058.53