Finding the Fourth Proportional to 9,803.31, 13,530.93 and 5,613.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.31 : 13,530.93 = 5,613.99 : x
2. Step 2: Convert to fraction form
   9,803.31/13,530.93 = 5,613.99/x
3. Step 3: Cross multiply
   9,803.31x = 13,530.93 × 5,613.99
4. Step 4: Simplify right side
   9,803.31x = 75,962,505.71
5. Step 5: Solve for x
   x = 75,962,505.71/9,803.31
6. Step 6: Final answer
   x = 7,748.66