Finding the Fourth Proportional to 8,749.16, 13,123.86 and 4,878.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,749.16 : 13,123.86 = 4,878.18 : x
2. Step 2: Convert to fraction form
   8,749.16/13,123.86 = 4,878.18/x
3. Step 3: Cross multiply
   8,749.16x = 13,123.86 × 4,878.18
4. Step 4: Simplify right side
   8,749.16x = 64,020,551.37
5. Step 5: Solve for x
   x = 64,020,551.37/8,749.16
6. Step 6: Final answer
   x = 7,317.34