Finding the Fourth Proportional to 10,335.99, 15,503.75 and 3,315.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,335.99 : 15,503.75 = 3,315.72 : x
2. Step 2: Convert to fraction form
   10,335.99/15,503.75 = 3,315.72/x
3. Step 3: Cross multiply
   10,335.99x = 15,503.75 × 3,315.72
4. Step 4: Simplify right side
   10,335.99x = 51,406,077.37
5. Step 5: Solve for x
   x = 51,406,077.37/10,335.99
6. Step 6: Final answer
   x = 4,973.50