Finding the Fourth Proportional to 47,276.56, 70,889.72 and 13,992.04

Step by Step Solution

1. Step 1: Write the proportion equation
   47,276.56 : 70,889.72 = 13,992.04 : x
2. Step 2: Convert to fraction form
   47,276.56/70,889.72 = 13,992.04/x
3. Step 3: Cross multiply
   47,276.56x = 70,889.72 × 13,992.04
4. Step 4: Simplify right side
   47,276.56x = 991,891,797.83
5. Step 5: Solve for x
   x = 991,891,797.83/47,276.56
6. Step 6: Final answer
   x = 20,980.63