Finding the Fourth Proportional to 22,090.31, 30,484.63 and 12,018.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,090.31 : 30,484.63 = 12,018.75 : x
2. Step 2: Convert to fraction form
   22,090.31/30,484.63 = 12,018.75/x
3. Step 3: Cross multiply
   22,090.31x = 30,484.63 × 12,018.75
4. Step 4: Simplify right side
   22,090.31x = 366,387,146.81
5. Step 5: Solve for x
   x = 366,387,146.81/22,090.31
6. Step 6: Final answer
   x = 16,585.88