Finding the Fourth Proportional to 28,051.56, 42,047.16 and 13,983.84

Step by Step Solution

1. Step 1: Write the proportion equation
   28,051.56 : 42,047.16 = 13,983.84 : x
2. Step 2: Convert to fraction form
   28,051.56/42,047.16 = 13,983.84/x
3. Step 3: Cross multiply
   28,051.56x = 42,047.16 × 13,983.84
4. Step 4: Simplify right side
   28,051.56x = 587,980,757.89
5. Step 5: Solve for x
   x = 587,980,757.89/28,051.56
6. Step 6: Final answer
   x = 20,960.72