Finding the Fourth Proportional to 21,386.56, 32,100.62 and 15,501.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,386.56 : 32,100.62 = 15,501.31 : x
2. Step 2: Convert to fraction form
   21,386.56/32,100.62 = 15,501.31/x
3. Step 3: Cross multiply
   21,386.56x = 32,100.62 × 15,501.31
4. Step 4: Simplify right side
   21,386.56x = 497,601,661.81
5. Step 5: Solve for x
   x = 497,601,661.81/21,386.56
6. Step 6: Final answer
   x = 23,267.03