Finding the Fourth Proportional to 9,878.58, 13,632.30 and 5,402.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,878.58 : 13,632.30 = 5,402.52 : x
2. Step 2: Convert to fraction form
   9,878.58/13,632.30 = 5,402.52/x
3. Step 3: Cross multiply
   9,878.58x = 13,632.30 × 5,402.52
4. Step 4: Simplify right side
   9,878.58x = 73,648,773.40
5. Step 5: Solve for x
   x = 73,648,773.40/9,878.58
6. Step 6: Final answer
   x = 7,455.40