Finding the Fourth Proportional to 14,380.32, 21,570.56 and 3,992.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,380.32 : 21,570.56 = 3,992.16 : x
2. Step 2: Convert to fraction form
   14,380.32/21,570.56 = 3,992.16/x
3. Step 3: Cross multiply
   14,380.32x = 21,570.56 × 3,992.16
4. Step 4: Simplify right side
   14,380.32x = 86,113,126.81
5. Step 5: Solve for x
   x = 86,113,126.81/14,380.32
6. Step 6: Final answer
   x = 5,988.26