Finding the Fourth Proportional to 11,064.76, 15,274.98 and 7,290.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,064.76 : 15,274.98 = 7,290.40 : x
2. Step 2: Convert to fraction form
   11,064.76/15,274.98 = 7,290.40/x
3. Step 3: Cross multiply
   11,064.76x = 15,274.98 × 7,290.40
4. Step 4: Simplify right side
   11,064.76x = 111,360,714.19
5. Step 5: Solve for x
   x = 111,360,714.19/11,064.76
6. Step 6: Final answer
   x = 10,064.45