Finding the Fourth Proportional to 10,830.30, 14,901.27 and 10,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.30 : 14,901.27 = 10,139.10 : x
2. Step 2: Convert to fraction form
   10,830.30/14,901.27 = 10,139.10/x
3. Step 3: Cross multiply
   10,830.30x = 14,901.27 × 10,139.10
4. Step 4: Simplify right side
   10,830.30x = 151,085,466.66
5. Step 5: Solve for x
   x = 151,085,466.66/10,830.30
6. Step 6: Final answer
   x = 13,950.26