Finding the Fourth Proportional to 7,862.58, 10,854.86 and 5,213.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,862.58 : 10,854.86 = 5,213.59 : x
2. Step 2: Convert to fraction form
   7,862.58/10,854.86 = 5,213.59/x
3. Step 3: Cross multiply
   7,862.58x = 10,854.86 × 5,213.59
4. Step 4: Simplify right side
   7,862.58x = 56,592,736.34
5. Step 5: Solve for x
   x = 56,592,736.34/7,862.58
6. Step 6: Final answer
   x = 7,197.73