Finding the Fourth Proportional to 10,445.83, 15,670.55 and 5,519.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,445.83 : 15,670.55 = 5,519.59 : x
2. Step 2: Convert to fraction form
   10,445.83/15,670.55 = 5,519.59/x
3. Step 3: Cross multiply
   10,445.83x = 15,670.55 × 5,519.59
4. Step 4: Simplify right side
   10,445.83x = 86,495,011.07
5. Step 5: Solve for x
   x = 86,495,011.07/10,445.83
6. Step 6: Final answer
   x = 8,280.34