Finding the Fourth Proportional to 11,428.18, 17,139.30 and 4,850.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,428.18 : 17,139.30 = 4,850.98 : x
2. Step 2: Convert to fraction form
   11,428.18/17,139.30 = 4,850.98/x
3. Step 3: Cross multiply
   11,428.18x = 17,139.30 × 4,850.98
4. Step 4: Simplify right side
   11,428.18x = 83,142,401.51
5. Step 5: Solve for x
   x = 83,142,401.51/11,428.18
6. Step 6: Final answer
   x = 7,275.21