Finding the Fourth Proportional to 10,688.76, 14,754.60 and 9,567.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,688.76 : 14,754.60 = 9,567.72 : x
2. Step 2: Convert to fraction form
   10,688.76/14,754.60 = 9,567.72/x
3. Step 3: Cross multiply
   10,688.76x = 14,754.60 × 9,567.72
4. Step 4: Simplify right side
   10,688.76x = 141,167,881.51
5. Step 5: Solve for x
   x = 141,167,881.51/10,688.76
6. Step 6: Final answer
   x = 13,207.13