Finding the Fourth Proportional to 21,152.51, 31,726.29 and 8,501.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,152.51 : 31,726.29 = 8,501.76 : x
2. Step 2: Convert to fraction form
   21,152.51/31,726.29 = 8,501.76/x
3. Step 3: Cross multiply
   21,152.51x = 31,726.29 × 8,501.76
4. Step 4: Simplify right side
   21,152.51x = 269,729,303.27
5. Step 5: Solve for x
   x = 269,729,303.27/21,152.51
6. Step 6: Final answer
   x = 12,751.65