Finding the Fourth Proportional to 9,942.08, 13,720.10 and 5,693.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.08 : 13,720.10 = 5,693.21 : x
2. Step 2: Convert to fraction form
   9,942.08/13,720.10 = 5,693.21/x
3. Step 3: Cross multiply
   9,942.08x = 13,720.10 × 5,693.21
4. Step 4: Simplify right side
   9,942.08x = 78,111,313.45
5. Step 5: Solve for x
   x = 78,111,313.45/9,942.08
6. Step 6: Final answer
   x = 7,856.64