Finding the Fourth Proportional to 16,667.76, 22,980.60 and 10,688.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,667.76 : 22,980.60 = 10,688.88 : x
2. Step 2: Convert to fraction form
   16,667.76/22,980.60 = 10,688.88/x
3. Step 3: Cross multiply
   16,667.76x = 22,980.60 × 10,688.88
4. Step 4: Simplify right side
   16,667.76x = 245,636,875.73
5. Step 5: Solve for x
   x = 245,636,875.73/16,667.76
6. Step 6: Final answer
   x = 14,737.25