Finding the Fourth Proportional to 21,054.31, 31,574.89 and 7,011.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,054.31 : 31,574.89 = 7,011.06 : x
2. Step 2: Convert to fraction form
   21,054.31/31,574.89 = 7,011.06/x
3. Step 3: Cross multiply
   21,054.31x = 31,574.89 × 7,011.06
4. Step 4: Simplify right side
   21,054.31x = 221,373,448.28
5. Step 5: Solve for x
   x = 221,373,448.28/21,054.31
6. Step 6: Final answer
   x = 10,514.40