Finding the Fourth Proportional to 11,117.89, 15,316.71 and 7,754.70

Step by Step Solution

1. Step 1: Write the proportion equation
   11,117.89 : 15,316.71 = 7,754.70 : x
2. Step 2: Convert to fraction form
   11,117.89/15,316.71 = 7,754.70/x
3. Step 3: Cross multiply
   11,117.89x = 15,316.71 × 7,754.70
4. Step 4: Simplify right side
   11,117.89x = 118,776,491.04
5. Step 5: Solve for x
   x = 118,776,491.04/11,117.89
6. Step 6: Final answer
   x = 10,683.37