Finding the Fourth Proportional to 13,332.16, 19,997.99 and 3,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,332.16 : 19,997.99 = 3,978.52 : x
2. Step 2: Convert to fraction form
   13,332.16/19,997.99 = 3,978.52/x
3. Step 3: Cross multiply
   13,332.16x = 19,997.99 × 3,978.52
4. Step 4: Simplify right side
   13,332.16x = 79,562,383.28
5. Step 5: Solve for x
   x = 79,562,383.28/13,332.16
6. Step 6: Final answer
   x = 5,967.71