Finding the Fourth Proportional to 11,875.40, 16,387.98 and 6,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,875.40 : 16,387.98 = 6,570.10 : x
2. Step 2: Convert to fraction form
   11,875.40/16,387.98 = 6,570.10/x
3. Step 3: Cross multiply
   11,875.40x = 16,387.98 × 6,570.10
4. Step 4: Simplify right side
   11,875.40x = 107,670,667.40
5. Step 5: Solve for x
   x = 107,670,667.40/11,875.40
6. Step 6: Final answer
   x = 9,066.70