Finding the Fourth Proportional to 8,973.81, 12,384.63 and 5,436.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.81 : 12,384.63 = 5,436.99 : x
2. Step 2: Convert to fraction form
   8,973.81/12,384.63 = 5,436.99/x
3. Step 3: Cross multiply
   8,973.81x = 12,384.63 × 5,436.99
4. Step 4: Simplify right side
   8,973.81x = 67,335,109.46
5. Step 5: Solve for x
   x = 67,335,109.46/8,973.81
6. Step 6: Final answer
   x = 7,503.51