Finding the Fourth Proportional to 22,762.63, 31,409.89 and 13,812.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,762.63 : 31,409.89 = 13,812.31 : x
2. Step 2: Convert to fraction form
   22,762.63/31,409.89 = 13,812.31/x
3. Step 3: Cross multiply
   22,762.63x = 31,409.89 × 13,812.31
4. Step 4: Simplify right side
   22,762.63x = 433,843,137.75
5. Step 5: Solve for x
   x = 433,843,137.75/22,762.63
6. Step 6: Final answer
   x = 19,059.45