Finding the Fourth Proportional to 21,036.08, 31,559.16 and 7,184.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,036.08 : 31,559.16 = 7,184.72 : x
2. Step 2: Convert to fraction form
   21,036.08/31,559.16 = 7,184.72/x
3. Step 3: Cross multiply
   21,036.08x = 31,559.16 × 7,184.72
4. Step 4: Simplify right side
   21,036.08x = 226,743,728.04
5. Step 5: Solve for x
   x = 226,743,728.04/21,036.08
6. Step 6: Final answer
   x = 10,778.80