Finding the Fourth Proportional to 11,400.96, 15,733.59 and 7,152.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,400.96 : 15,733.59 = 7,152.20 : x
2. Step 2: Convert to fraction form
   11,400.96/15,733.59 = 7,152.20/x
3. Step 3: Cross multiply
   11,400.96x = 15,733.59 × 7,152.20
4. Step 4: Simplify right side
   11,400.96x = 112,529,782.40
5. Step 5: Solve for x
   x = 112,529,782.40/11,400.96
6. Step 6: Final answer
   x = 9,870.20