Finding the Fourth Proportional to 10,091.71, 15,139.59 and 3,516.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.71 : 15,139.59 = 3,516.13 : x
2. Step 2: Convert to fraction form
   10,091.71/15,139.59 = 3,516.13/x
3. Step 3: Cross multiply
   10,091.71x = 15,139.59 × 3,516.13
4. Step 4: Simplify right side
   10,091.71x = 53,232,673.31
5. Step 5: Solve for x
   x = 53,232,673.31/10,091.71
6. Step 6: Final answer
   x = 5,274.89