Finding the Fourth Proportional to 10,801.54, 14,897.31 and 9,070.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,801.54 : 14,897.31 = 9,070.15 : x
2. Step 2: Convert to fraction form
   10,801.54/14,897.31 = 9,070.15/x
3. Step 3: Cross multiply
   10,801.54x = 14,897.31 × 9,070.15
4. Step 4: Simplify right side
   10,801.54x = 135,120,836.30
5. Step 5: Solve for x
   x = 135,120,836.30/10,801.54
6. Step 6: Final answer
   x = 12,509.40