Finding the Fourth Proportional to 11,278.30, 15,558.85 and 7,300.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,278.30 : 15,558.85 = 7,300.69 : x
2. Step 2: Convert to fraction form
   11,278.30/15,558.85 = 7,300.69/x
3. Step 3: Cross multiply
   11,278.30x = 15,558.85 × 7,300.69
4. Step 4: Simplify right side
   11,278.30x = 113,590,340.61
5. Step 5: Solve for x
   x = 113,590,340.61/11,278.30
6. Step 6: Final answer
   x = 10,071.58