Finding the Fourth Proportional to 10,994.13, 15,139.31 and 10,748.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,994.13 : 15,139.31 = 10,748.97 : x
2. Step 2: Convert to fraction form
   10,994.13/15,139.31 = 10,748.97/x
3. Step 3: Cross multiply
   10,994.13x = 15,139.31 × 10,748.97
4. Step 4: Simplify right side
   10,994.13x = 162,731,935.27
5. Step 5: Solve for x
   x = 162,731,935.27/10,994.13
6. Step 6: Final answer
   x = 14,801.71