Finding the Fourth Proportional to 9,877.84, 13,631.76 and 5,401.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,877.84 : 13,631.76 = 5,401.88 : x
2. Step 2: Convert to fraction form
   9,877.84/13,631.76 = 5,401.88/x
3. Step 3: Cross multiply
   9,877.84x = 13,631.76 × 5,401.88
4. Step 4: Simplify right side
   9,877.84x = 73,637,131.71
5. Step 5: Solve for x
   x = 73,637,131.71/9,877.84
6. Step 6: Final answer
   x = 7,454.78