Finding the Fourth Proportional to 9,953.21, 13,735.71 and 5,477.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,953.21 : 13,735.71 = 5,477.07 : x
2. Step 2: Convert to fraction form
   9,953.21/13,735.71 = 5,477.07/x
3. Step 3: Cross multiply
   9,953.21x = 13,735.71 × 5,477.07
4. Step 4: Simplify right side
   9,953.21x = 75,231,445.17
5. Step 5: Solve for x
   x = 75,231,445.17/9,953.21
6. Step 6: Final answer
   x = 7,558.51