Finding the Fourth Proportional to 21,054.84, 31,585.50 and 7,010.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,054.84 : 31,585.50 = 7,010.05 : x
2. Step 2: Convert to fraction form
   21,054.84/31,585.50 = 7,010.05/x
3. Step 3: Cross multiply
   21,054.84x = 31,585.50 × 7,010.05
4. Step 4: Simplify right side
   21,054.84x = 221,415,934.28
5. Step 5: Solve for x
   x = 221,415,934.28/21,054.84
6. Step 6: Final answer
   x = 10,516.15