Finding the Fourth Proportional to 15,018.32, 22,521.72 and 5,155.76

Step by Step Solution

1. Step 1: Write the proportion equation
   15,018.32 : 22,521.72 = 5,155.76 : x
2. Step 2: Convert to fraction form
   15,018.32/22,521.72 = 5,155.76/x
3. Step 3: Cross multiply
   15,018.32x = 22,521.72 × 5,155.76
4. Step 4: Simplify right side
   15,018.32x = 116,116,583.11
5. Step 5: Solve for x
   x = 116,116,583.11/15,018.32
6. Step 6: Final answer
   x = 7,731.66