Finding the Fourth Proportional to 9,861.12, 13,607.94 and 5,384.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,861.12 : 13,607.94 = 5,384.82 : x
2. Step 2: Convert to fraction form
   9,861.12/13,607.94 = 5,384.82/x
3. Step 3: Cross multiply
   9,861.12x = 13,607.94 × 5,384.82
4. Step 4: Simplify right side
   9,861.12x = 73,276,307.47
5. Step 5: Solve for x
   x = 73,276,307.47/9,861.12
6. Step 6: Final answer
   x = 7,430.83