Finding the Fourth Proportional to 31,404.72, 47,077.86 and 21,548.64

Step by Step Solution

1. Step 1: Write the proportion equation
   31,404.72 : 47,077.86 = 21,548.64 : x
2. Step 2: Convert to fraction form
   31,404.72/47,077.86 = 21,548.64/x
3. Step 3: Cross multiply
   31,404.72x = 47,077.86 × 21,548.64
4. Step 4: Simplify right side
   31,404.72x = 1,014,463,857.11
5. Step 5: Solve for x
   x = 1,014,463,857.11/31,404.72
6. Step 6: Final answer
   x = 32,302.91