Finding the Fourth Proportional to 22,686.34, 31,298.86 and 13,730.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,686.34 : 31,298.86 = 13,730.58 : x
2. Step 2: Convert to fraction form
   22,686.34/31,298.86 = 13,730.58/x
3. Step 3: Cross multiply
   22,686.34x = 31,298.86 × 13,730.58
4. Step 4: Simplify right side
   22,686.34x = 429,751,501.14
5. Step 5: Solve for x
   x = 429,751,501.14/22,686.34
6. Step 6: Final answer
   x = 18,943.18