Finding the Fourth Proportional to 11,499.63, 15,870.06 and 7,022.66

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.63 : 15,870.06 = 7,022.66 : x
2. Step 2: Convert to fraction form
   11,499.63/15,870.06 = 7,022.66/x
3. Step 3: Cross multiply
   11,499.63x = 15,870.06 × 7,022.66
4. Step 4: Simplify right side
   11,499.63x = 111,449,956.21
5. Step 5: Solve for x
   x = 111,449,956.21/11,499.63
6. Step 6: Final answer
   x = 9,691.61