Finding the Fourth Proportional to 11,398.77, 15,730.56 and 7,150.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,398.77 : 15,730.56 = 7,150.01 : x
2. Step 2: Convert to fraction form
   11,398.77/15,730.56 = 7,150.01/x
3. Step 3: Cross multiply
   11,398.77x = 15,730.56 × 7,150.01
4. Step 4: Simplify right side
   11,398.77x = 112,473,582.65
5. Step 5: Solve for x
   x = 112,473,582.65/11,398.77
6. Step 6: Final answer
   x = 9,867.17