Finding the Fourth Proportional to 9,612.56, 14,323.28 and 8,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,612.56 : 14,323.28 = 8,564.50 : x
2. Step 2: Convert to fraction form
   9,612.56/14,323.28 = 8,564.50/x
3. Step 3: Cross multiply
   9,612.56x = 14,323.28 × 8,564.50
4. Step 4: Simplify right side
   9,612.56x = 122,671,731.56
5. Step 5: Solve for x
   x = 122,671,731.56/9,612.56
6. Step 6: Final answer
   x = 12,761.61