Finding the Fourth Proportional to 10,099.08, 15,131.76 and 3,521.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,099.08 : 15,131.76 = 3,521.64 : x
2. Step 2: Convert to fraction form
   10,099.08/15,131.76 = 3,521.64/x
3. Step 3: Cross multiply
   10,099.08x = 15,131.76 × 3,521.64
4. Step 4: Simplify right side
   10,099.08x = 53,288,611.29
5. Step 5: Solve for x
   x = 53,288,611.29/10,099.08
6. Step 6: Final answer
   x = 5,276.58