Finding the Fourth Proportional to 11,091.72, 15,302.90 and 7,316.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,091.72 : 15,302.90 = 7,316.76 : x
2. Step 2: Convert to fraction form
   11,091.72/15,302.90 = 7,316.76/x
3. Step 3: Cross multiply
   11,091.72x = 15,302.90 × 7,316.76
4. Step 4: Simplify right side
   11,091.72x = 111,967,646.60
5. Step 5: Solve for x
   x = 111,967,646.60/11,091.72
6. Step 6: Final answer
   x = 10,094.71