Finding the Fourth Proportional to 11,680.76, 17,529.55 and 4,656.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,680.76 : 17,529.55 = 4,656.71 : x
2. Step 2: Convert to fraction form
   11,680.76/17,529.55 = 4,656.71/x
3. Step 3: Cross multiply
   11,680.76x = 17,529.55 × 4,656.71
4. Step 4: Simplify right side
   11,680.76x = 81,630,030.78
5. Step 5: Solve for x
   x = 81,630,030.78/11,680.76
6. Step 6: Final answer
   x = 6,988.42