Finding the Fourth Proportional to 10,088.18, 15,123.77 and 4,820.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,088.18 : 15,123.77 = 4,820.21 : x
2. Step 2: Convert to fraction form
   10,088.18/15,123.77 = 4,820.21/x
3. Step 3: Cross multiply
   10,088.18x = 15,123.77 × 4,820.21
4. Step 4: Simplify right side
   10,088.18x = 72,899,723.29
5. Step 5: Solve for x
   x = 72,899,723.29/10,088.18
6. Step 6: Final answer
   x = 7,226.25