Finding the Fourth Proportional to 10,667.76, 15,973.60 and 7,530.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,667.76 : 15,973.60 = 7,530.80 : x
2. Step 2: Convert to fraction form
   10,667.76/15,973.60 = 7,530.80/x
3. Step 3: Cross multiply
   10,667.76x = 15,973.60 × 7,530.80
4. Step 4: Simplify right side
   10,667.76x = 120,293,986.88
5. Step 5: Solve for x
   x = 120,293,986.88/10,667.76
6. Step 6: Final answer
   x = 11,276.41