Finding the Fourth Proportional to 38,719.46, 58,086.76 and 12,422.18

Step by Step Solution

1. Step 1: Write the proportion equation
   38,719.46 : 58,086.76 = 12,422.18 : x
2. Step 2: Convert to fraction form
   38,719.46/58,086.76 = 12,422.18/x
3. Step 3: Cross multiply
   38,719.46x = 58,086.76 × 12,422.18
4. Step 4: Simplify right side
   38,719.46x = 721,564,188.34
5. Step 5: Solve for x
   x = 721,564,188.34/38,719.46
6. Step 6: Final answer
   x = 18,635.70