Finding the Fourth Proportional to 8,870.25, 13,294.43 and 4,921.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,870.25 : 13,294.43 = 4,921.34 : x
2. Step 2: Convert to fraction form
   8,870.25/13,294.43 = 4,921.34/x
3. Step 3: Cross multiply
   8,870.25x = 13,294.43 × 4,921.34
4. Step 4: Simplify right side
   8,870.25x = 65,426,337.51
5. Step 5: Solve for x
   x = 65,426,337.51/8,870.25
6. Step 6: Final answer
   x = 7,375.93