Finding the Fourth Proportional to 22,810.16, 31,486.92 and 13,859.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,810.16 : 31,486.92 = 13,859.12 : x
2. Step 2: Convert to fraction form
   22,810.16/31,486.92 = 13,859.12/x
3. Step 3: Cross multiply
   22,810.16x = 31,486.92 × 13,859.12
4. Step 4: Simplify right side
   22,810.16x = 436,381,002.71
5. Step 5: Solve for x
   x = 436,381,002.71/22,810.16
6. Step 6: Final answer
   x = 19,130.99