Finding the Fourth Proportional to 10,538.37, 15,803.91 and 3,611.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538.37 : 15,803.91 = 3,611.25 : x
2. Step 2: Convert to fraction form
   10,538.37/15,803.91 = 3,611.25/x
3. Step 3: Cross multiply
   10,538.37x = 15,803.91 × 3,611.25
4. Step 4: Simplify right side
   10,538.37x = 57,071,869.99
5. Step 5: Solve for x
   x = 57,071,869.99/10,538.37
6. Step 6: Final answer
   x = 5,415.63