Finding the Fourth Proportional to 13,603.37, 20,410.86 and 5,707.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,603.37 : 20,410.86 = 5,707.84 : x
2. Step 2: Convert to fraction form
   13,603.37/20,410.86 = 5,707.84/x
3. Step 3: Cross multiply
   13,603.37x = 20,410.86 × 5,707.84
4. Step 4: Simplify right side
   13,603.37x = 116,501,973.14
5. Step 5: Solve for x
   x = 116,501,973.14/13,603.37
6. Step 6: Final answer
   x = 8,564.20