Finding the Fourth Proportional to 12,890,167.48, 17,788,075.90 and 7,088,949.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890,167.48 : 17,788,075.90 = 7,088,949.10 : x
2. Step 2: Convert to fraction form
   12,890,167.48/17,788,075.90 = 7,088,949.10/x
3. Step 3: Cross multiply
   12,890,167.48x = 17,788,075.90 × 7,088,949.10
4. Step 4: Simplify right side
   12,890,167.48x = 126,098,764,642,036.67
5. Step 5: Solve for x
   x = 126,098,764,642,036.67/12,890,167.48
6. Step 6: Final answer
   x = 9,782,554.40