Finding the Fourth Proportional to 13,088.78, 19,621.56 and 4,767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,088.78 : 19,621.56 = 4,767.25 : x
2. Step 2: Convert to fraction form
   13,088.78/19,621.56 = 4,767.25/x
3. Step 3: Cross multiply
   13,088.78x = 19,621.56 × 4,767.25
4. Step 4: Simplify right side
   13,088.78x = 93,540,881.91
5. Step 5: Solve for x
   x = 93,540,881.91/13,088.78
6. Step 6: Final answer
   x = 7,146.65