Finding the Fourth Proportional to 22,018.31, 30,385.28 and 12,587.08

Step by Step Solution

1. Step 1: Write the proportion equation
   22,018.31 : 30,385.28 = 12,587.08 : x
2. Step 2: Convert to fraction form
   22,018.31/30,385.28 = 12,587.08/x
3. Step 3: Cross multiply
   22,018.31x = 30,385.28 × 12,587.08
4. Step 4: Simplify right side
   22,018.31x = 382,461,905.69
5. Step 5: Solve for x
   x = 382,461,905.69/22,018.31
6. Step 6: Final answer
   x = 17,370.17