Finding the Fourth Proportional to 21,010.93, 31,516.01 and 5,216.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,010.93 : 31,516.01 = 5,216.01 : x
2. Step 2: Convert to fraction form
   21,010.93/31,516.01 = 5,216.01/x
3. Step 3: Cross multiply
   21,010.93x = 31,516.01 × 5,216.01
4. Step 4: Simplify right side
   21,010.93x = 164,387,823.32
5. Step 5: Solve for x
   x = 164,387,823.32/21,010.93
6. Step 6: Final answer
   x = 7,823.92