Finding the Fourth Proportional to 11,064.90, 15,271.29 and 7,931.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,064.90 : 15,271.29 = 7,931.46 : x
2. Step 2: Convert to fraction form
   11,064.90/15,271.29 = 7,931.46/x
3. Step 3: Cross multiply
   11,064.90x = 15,271.29 × 7,931.46
4. Step 4: Simplify right side
   11,064.90x = 121,123,625.78
5. Step 5: Solve for x
   x = 121,123,625.78/11,064.90
6. Step 6: Final answer
   x = 10,946.65