Finding the Fourth Proportional to 21,047.32, 31,573.98 and 7,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,047.32 : 31,573.98 = 7,002.72 : x
2. Step 2: Convert to fraction form
   21,047.32/31,573.98 = 7,002.72/x
3. Step 3: Cross multiply
   21,047.32x = 31,573.98 × 7,002.72
4. Step 4: Simplify right side
   21,047.32x = 221,103,741.23
5. Step 5: Solve for x
   x = 221,103,741.23/21,047.32
6. Step 6: Final answer
   x = 10,505.08