Finding the Fourth Proportional to 22,097.17, 30,484 and 13,139.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,097.17 : 30,484 = 13,139.57 : x
2. Step 2: Convert to fraction form
   22,097.17/30,484 = 13,139.57/x
3. Step 3: Cross multiply
   22,097.17x = 30,484 × 13,139.57
4. Step 4: Simplify right side
   22,097.17x = 400,546,651.88
5. Step 5: Solve for x
   x = 400,546,651.88/22,097.17
6. Step 6: Final answer
   x = 18,126.60