Finding the Fourth Proportional to 12,020,611.98, 17,987,817.57 and 10,406,931.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020,611.98 : 17,987,817.57 = 10,406,931.42 : x
2. Step 2: Convert to fraction form
   12,020,611.98/17,987,817.57 = 10,406,931.42/x
3. Step 3: Cross multiply
   12,020,611.98x = 17,987,817.57 × 10,406,931.42
4. Step 4: Simplify right side
   12,020,611.98x = 187,197,983,846,461.06
5. Step 5: Solve for x
   x = 187,197,983,846,461.06/12,020,611.98
6. Step 6: Final answer
   x = 15,573,082.65