Finding the Fourth Proportional to 10,298.59, 15,434.36 and 5,858.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,298.59 : 15,434.36 = 5,858.29 : x
2. Step 2: Convert to fraction form
   10,298.59/15,434.36 = 5,858.29/x
3. Step 3: Cross multiply
   10,298.59x = 15,434.36 × 5,858.29
4. Step 4: Simplify right side
   10,298.59x = 90,419,001.77
5. Step 5: Solve for x
   x = 90,419,001.77/10,298.59
6. Step 6: Final answer
   x = 8,779.74