Finding the Fourth Proportional to 10,631.34, 15,948.95 and 3,515.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,631.34 : 15,948.95 = 3,515.99 : x
2. Step 2: Convert to fraction form
   10,631.34/15,948.95 = 3,515.99/x
3. Step 3: Cross multiply
   10,631.34x = 15,948.95 × 3,515.99
4. Step 4: Simplify right side
   10,631.34x = 56,076,251.39
5. Step 5: Solve for x
   x = 56,076,251.39/10,631.34
6. Step 6: Final answer
   x = 5,274.62